deltarune

Hometown is mostly empty, as everyone has left by that point to go see the announcement of the Festival King and Queen at the Holiday mansion, except for Sans, who is still selling Ice Cream, and Rudy, who is taking a break from setting up lights. When interacting with the now-empty stalls, Susie will retell what she and Noelle did there.

Susie and Kris visit Sans's ice cream stand to get ice cream. Sans gives Kris the bread instead and says he needs more time to finish making the ice cream, so Kris goes to the lake to see Noelle while Susie waits.

At the lake, Noelle talks to Kris about how she felt like a spectator in her own life, and how Kris helped her escape this state of being. She wants to do "something crazy", so she takes Kris's hands and together they walk into the lake, continuing to go further even as their heads are submerged and they are unable to breathe. The player has to keep them alive by continuing to spam "Proceed". If this is successful, Noelle and Kris's fate is left uncertain as the Chapter ends. Otherwise, they get out of the water and the game continues the same way as the normal route, with some minor differences.

If Chapter 2's Weird Route has been completed, a unique interaction is possible in the hospital after leaving the Dark World. If Kris and Susie visit Rudy in the hospital, Noelle will leave the room and talk to herself, deciding to investigate Kris's weird behaviour. Kris follows after her and interrupts her thoughts, scaring her and prompting her to leave.

In Chapter 4, the Weird Route starts at the church. Noelle walks up to Kris and Susie herself and invites them to her house. There, she speaks to Kris privately and reveals that at some point before the Chapter Kris had snuck onto her porch, apologised and taken the ThornRing away. If the Weird Route is continued, Kris puts the ThornRing back on her before leaving.

Berdly can be visited in the hospital, being comatose and cold. It is revealed that Kris had taken him to the hospital during the night. Kris enters the room by themselves and is able to warm him up.

Before entering the church again, Susie attempts to ask Kris what they talked about with Noelle. A blank choice prompt appears and then disappears after a few seconds and the party moves on.

At the end of the Chapter, at Kris's house, Carol calls them and tells them that Noelle is excited to see them at the Festival.

Chapter 5 is completely changed during the Weird Route. The Chapter starts much later into the day in Kris's room where Kris has been lying in bed all day, refusing to get up.
If Chapter 2's Weird Route has been completed, a unique interaction is possible in the hospital after leaving the Dark World. If Kris and Susie visit Rudy in the hospital, Noelle will leave the room and talk to herself, deciding to investigate Kris's weird behaviour. Kris follows after her and interrupts her thoughts, scaring her and prompting her to leave.

In Chapter 4, the Weird Route starts at the church. Noelle walks up to Kris and Susie herself and invites them to her house. There, she speaks to Kris privately and reveals that at some point before the Chapter

The Festival lasts most of the day, where Kris acts as a wingman for Susie and Noelle and leads them to various places and activities. Before leaving the Festival, the party obtains ice creams from Sans.

Afterwards, Kris, Susie, and Noelle go to the lake together to finish their ice creams. Kris falls asleep and a cutscene plays where Susie and Noelle hang out, before confessing their love for each other. Susie then leaves to get more ice cream, after which Carol calls Noelle over to Town Hall because Rudy "fell down".

Susie, having gotten more ice cream, comes back, only to find Noelle gone. She and Kris then leave the beach. While Susie enters Flower King to get flowers for Noelle, Kris tears out their SOUL and creates the Flower King Fountain. The two then enter the newly created Dark World.

After the Knight kidnaps Asgore and Kris seals the second Flower King Fountain, Kris picks up a bag of seeds of a golden flower and one of the shelter's codes from inside the golden flower's shattered case. Kris begins to tear up the code, but Susie comes back before they can finish and reads it out loud as "0915199X". They then exit Flower King. The player is given a choice as to whether Kris should walk Susie "home", but regardless of their input, Kris walks Susie back to Castle Town, where the Chapter ends.

Weird Route
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If Chapter 2's Weird Route has been completed, a unique interaction is possible in the hospital after leaving the Dark World. If Kris and Susie visit Rudy in the hospital, Noelle will leave the room and talk to herself, deciding to investigate Kris's weird behaviour. Kris follows after her and interrupts her thoughts, scaring her and prompting her to leave.

In Chapter 4, the Weird Route starts at the church. Noelle walks up to Kris and Susie herself and invites them to her house. Th

History
Prior to the events of Deltarune, Alphys moved into Hometown. She noticed that both Carol and Undyne often visited the shelter.[3]

Sometime "recently", Hometown's internet went down due to an unspecified cause,[4][5][6] and the outage persists to the present day.

Chapter 1
At the start of Chapter 1, Toriel and Kris go through Hometown's main road to reach school. During the drive, various residents wave at them.

After the Dark Fountain in Card Kingdom is sealed, time has passed. Kris has to walk home due to spending most of their day in the Dark World. During this time, Kris can explore Hometown. Chapter 4
At the beginning of Chapter 4, after eating breakfast in the Dreemurr residence, Kris and Susie attend service at the church with Toriel. Post service, Kris and Susie can explore Hometown before going to Noelle's House.

After getting kicked out of the mansion, Kris and Susie can explore the town in the rain. However, every building is closed and only a few Lightners are outside. At the second intersection, Susie suggests they can visit Ralsei if they did not go to Castle Town prior.

Once the 3rd Sanctuary Fountain has been sealed, Hometown can be explored a final time at night. Every building is closed, and only Kris and Susie are outside.

In Chapter 5's Weird Route, the course of the story is dramatically altered, and the Dark World is skipped entirely.

After skipping the Festival, Kris is forced out of bed by the SOUL to walk around the empty Festival with Susie, having a brief moment with Sans, and then go to the lake, where Noelle is waiting. She monologues about how limited her life felt until Kris changed her, and tells Kris to come with her to do "something crazy": cross the lake "to somewhere no one has ever been before!". She takes Kris's hands and walks backwards into the lake. Successfully completing all the choice prompts causes the game to generate a unique Chapter 5 Completion FILE and reset to the Chapter Select screen. As no SAVE points are available during this Chapter, a Weird Route encounter on the Weird Route are Swatchlings, which completely disappear from Queen's Mansion, and all enemies introduced in Flower Kingdom, as it is skipped entirely, meaning they cannot be RECRUITed.

The party also cannot RECRUIT Ambyu-Lance, Virovirokun, Werewire, Maus, or Tasque since they need to be frozen with IceShock and LOST to continue the route.

The Ch2 All Stars challenge in the Party Dojo is inaccessible along with the TensionGem it rewards since most of the RECRUITs needed for the challenge to appear need to be LOST to continue the route.

Nubert will never go to Castle Town since the player needs all RECRUITS for him to appear and stay. This also means the Trashy Trio challenge is inaccessible, although the player would not have been able to access it anyway as Castle Town cannot be visited when continuing from Chapter 4's Weird Route.

The miniature Electro-Dasher cannot join Castle Town since the segment the player obtains it in does not happen in the Weird Route.SAVE file cannot be made on Chapter 5.

There are also minor changes after completing Chapter 2's Weird Route:

In the Cold Place, Ralsei can warn Kris that going alone with Noelle at the Festival is a "bad choice", but backtracks on the suggestion.[1]
Spamton does not appear in the Bonus Zone blue wardrobe cutscene despite obtaining the PuppetScarf, making the Pipis obtainable.[2]
The Shadow Mantle holder also states that a part of Kris must have "enjoyed yesterday".[3]
If the player answers "Of course. Games are fun" to Susie after the Sword Route, Kris reacts negatively to Susie's comment comparing them to Berdly.[4] In Chapter 4's Weird Route, the core events occur in the Light World when Kris and Susie visit Noelle's House.

Noelle asks to speak to Kris privately, and she recalls the Chapter 2 events with them. When pressing proceed, the SOUL will teleport into the room, then the player must hover the SOUL on Kris before the dialogue is finished, if done, the route is continued. If the route is continued, this conversation culminates in the player directing Kris to force a thorn into Noelle's hand. After this, the Weird Route is once again impossible to abort for the Chapter, with some changes in dialogue and the Chapter's ending.

The Weird Route starts in Chapter 2, in Cyber City; as of now, its alterations are most significant in this Chapter. While Chapter 3 does not have a portion of the Weird Route, it has minor differences if the Weird Route was completed in Chapter 2. In Chapter 4 and Chapter 5, the Weird Route is continued in the corresponding Light World segment of each Chapter, with Chapter 5's portion ending with the implication that Chapter 6 will be skipped, and that the Weird Route will continue in Chapter 7.The Weird Route begins in Chapter 2, when Noelle joins the party in Cyber City. It involves backtracking to Freeze all enemies with IceShock and acquiring route-exclusive weapons, like the FreezeRing, from the only addison that appears, and the ThornRing, from Spamton at the dog dumpster. The route is set for the duration of the Chapter once Berdly is frozen with SnowGrave at the end of his second encounter, which drastically alters the final area and replaces the final battles with Queen with Kris in a solo battle versus Spamton NEO. While Chapter 3 isn't affected by the Weird Route, it is directly referenced in the Original Game via the Ice Palace:

In the Ice Palace, there is a room with the text, "THE FORBIDDEN PATH BEGAN WITH ICE MAGIC". HERO_SWORD gains White Cloak as a party member, who resembles Noelle's Dark World visage with a hood, and is internally named as obj_board_enemy_deer. In the area, White Cloak's ice magic is used to freeze enemies (including a blue bird) into hexagonal blocks of ice that resemble the one that Berdly is frozen in. The alleyway that leads to the manhole dungeon is reminiscent of the alleyway in Cyber City that Kris traverses after Berdly is frozen in Chapter 2. Both alleyways are dark, have the same shape, and lead to manholes

At Top of Castle, the party fights Flowery and the six flowers with the new orange SOUL mode. After winning, Asgore reveals that he blames himself for an undisclosed tragedy, and how his obsession with proving his innocence through the existence of Dark Worlds pushed away the rest of his family. Kris seals the Dark Fountain, but it is revealed that a second Dark Fountain was made just before the first was sealed, allowing the Knight to swoop in and abduct Asgore. The party is unable to reach the Knight, however, Flowery, who is fast enough, manages to catch up with the Knight. Flowery attacks the Knight, but it defies Flowery's fake "999" stats. In a tense struggle, Flowery gets slashed, leaving him badly wounded, and turns back into his Light World form, torn in half. The Knight escapes with Asgore and the party seals the second Fountain. After the second Dark Fountain is sealed, Kris uncovers a shelter code in Flowery's soil and tries to tear it apart, but Susie arrives and notices the code, interrupting Kris's attempt.

Kris walks Susie to Castle Town (which she now calls home), where she insists to Kris that they need to bring Noelle with them in the future. After the credits, Susie is shown decorating Castle Town for Noelle's arrival while Kris is shown walking away visibly dejected.

The Chapter opens with Kris emerging from their bedroom window. They retrieve the SOUL and leave their home to go to Castle Town. The residents of Castle Town are helping Susie get ready for her date with Noelle during the Festival. After leaving Castle Town, Noelle joins the party and the three visit the Festival.

After the Festival, Susie and Noelle have a picnic beside the lake. Carol calls Noelle, before Susie interrupts, takes Noelle and carries her into the lake. They exit the lake, and Carol calls again, with Noelle mustering up the strength to refuse the call. Susie hesitates to say something to Noelle before going to get more ice cream. Noelle gets another call from Carol, in which she mentions Rudy having fallen down. Noelle leaves to see what happened, while Kris and Susie leave to go to Flower King. Kris waits outside as Susie enters, and as she exits the building, Kris rips out their SOUL, goes into the shop from the back door, and creates a Dark Fountain inside before Susie notices. Susie enters the resulting Dark World, with Kris following her just as they put the SOUL back. Susie and Kris land in a field and find Asgore speaking with Flowery, a plant formed from the golden flower in Flower King. Flowery quickly befriends Asgore, before introducing himself to Kris and Susie. Kris and Susie find Ralsei in a wardrobe, which Flowery shoved him in. For the most part of the rest of the game, Flowery tries to prevent Asgore from seeing the party. As the party ventures across Flower Kingdom, they encounter six other plants patterned after colorful flowers Asgore has kept maintained in the second floor of Flower King, formerly a part of a flower bouquet Asgore gave Toriel as part of his proposal. In front of Flower Castle, Asgore finally notices them and pushes them out into the Light World, although they return using the back door.

Kris seals the 3rd Sanctuary Fountain and returns with Susie to their house. They find Toriel inebriated and dancing with Sans in the living room. Toriel explains that she had cancelled choir practice and was never in the church. Toriel's behavior prompts Susie to leave. After Kris goes to bed and unsuccessfully tries to sleep, the phone rings and the caller reminds Kris of a promise they had made.

After the credits, the voice addresses the player, complimenting them for reaching the halfway point, before stating that they are still waiting for something, ending their speech by asking "HOW MUCH LONGER NOW...? MY DELTARUNE

However, after doing so, Kris and Susie find that there is another Dark World in the church behind a locked door. Looking around the church for the code to the door, Susie discovers that the Old Man is actually a Darkner created from mementos of Gerson, a renowned author, teacher, and the deceased father of the church's priest. In hopes that the Old Man can help them unlock the door, Susie creates a new Dark Fountain.

While searching for the Old Man in the 2nd Sanctuary, Kris and Susie are ambushed in darkness by the Sound of Justice, a shrouded figure they both believe to be the Old Man. The two are saved by Ralsei, who destroys the figure. He explains that the hostile Darkner was a statue replica of the Old Man, and that Gerson's remains were incompatible with Susie's Dark Fountain. When Susie confronts Ralsei on his prior behavior, he tearfully admits that he knows everything about the prophecy, including how it ends, but does not know what would be appropriate to disclose. The two subsequently make up, with Ralsei promising to be more honest, and learn the code to the church door from a Darkner formed from a fire extinguisher After sealing the 2nd Sanctuary Fountain, Kris and Susie return to the Light World and unlock the door to find the Knight in the 3rd Sanctuary. The Knight, confronted by the party, creates another Dark Fountain, resulting in the formation of a Titan, a harbinger of the Roaring. The party defeats the Titan with the Old Man's assistance. Susie runs ahead against Ralsei's protests and finds the final part of the prophecy, which she destroys shortly before the player can read it. Susie assures Ralsei that none of them would allow the prophecy to come to pass.

Kris seals the 3rd Sanctuary Fountain and returns with Susie to their house. They find Toriel inebriated and dancing with Sans in the living room. Toriel explains that she had cancelled choir practice and was never in the church. Toriel's behavior prompts Susie to leave. After Kris goes

This Chapter is primarily set in the Dark Sanctuaries, a set of three Dark Worlds created in the church. Its main antagonist is the Knight, and its Shadow Crystal boss is the Hammer of Justice. The Weird Route continues in this Chapter.The morning after Kris and Susie seal the Dark Fountain in the Dreemurr residence's living room, Toriel invites Susie to attend church service. There, Kris and Susie ask townsfolk for clues regarding the shelter and conclude that the most likely source of information is Noelle's mother, mayor Carol. They convince Noelle to invite them over to her house for a study session so that Kris may investigate the house while Susie distracts Noelle in the living room.

In Dess's room, Kris finds a note inside her guitar with a code to the shelter. However, Kris rips out their SOUL before the player can fully read it. The SOUL, locked inside a spare room, enters the house's vents to find Kris taking a phone call from an unknown person instructing them to prevent Susie from finding the guitar. Although Kris fails, Carol returns home before Susie can read the note and expels her from the house. The duo return to the church to wait for Toriel, but they instead discover a new Dark World has taken form inside. In the Dark World, Dark Sanctuary, Kris and Susie find numerous glass tapestries depicting the prophecy. Upon reuniting with Ralsei, Susie notes that his behavior is remarkably different than usual, which he repeatedly dismisses. They meet the Old Man, who acts as a mentor to Susie and assists the party in many ways, leading to them encountering the Knight. Despite the party's efforts, the Knight escapes through a Great Door before they can catch up with it. The party decides to seal the Dark Fountain and regroup at a later time.

After each round of TV Time, Kris can play the Original Game in the Green Room's backstage area, which requires an S-rank, T-rank, or Z-rank to access. Each round of the Original Game consists of Kris's in-game avatar HERO_SWORD retrieving a sword and killing the enemies on the board, increasing their LV. Eventually, using the strength gained after reaching LV MAX, HERO_SWORD acquires a key that allows them access to the next board.

Upon returning to the Green Room from the greater TV World, Kris plays the final round of the Original Game and engages in battle against the Shadow Mantle holder. After defeating them, HERO_SWORD walks out of the game screen and into Kris's world, and Kris obtains the Shadow Mantle, an armor Seam had intended to give to the party in Chapter 2 but could not find. The third installment of the in-universe book series Lord of the Hammer is summarized by the Hammer of Justice as "Chapter 3, The Isles of Northernlight. The heroes travel among the islands and catch a glimpse of a lost land." This parallels the events of Chapter 3; the party explores Island Board in The Legend of Tenna and can briefly see the Ice Palace.
In the Original Game, the Island Board's hint at the Ice Palace is "GO TO NORTHERN LIGHT", with the track playing at that location also being titled NORTHERNLIGHT.
The Chapter's subtitle, "Late Night", is both a straightforward description of the Chapter's timespan, as well as reference to late-night television. It may be also be a pun on "late Knight", owing to the Knight's late appearance in the Chapter.[3]

Tenna, realizing the trio is gone, orders his employees to search for them. As his employees repeatedly fail to find or capture the party, Tenna breaks down further, pushing his subordinates away until they all abandon him, with Mike being the last to leave. Eventually, the party returns to the Cold Place to seal the Fountain, but Tenna blocks the way. He explains his reason for wanting to create a show that would never end: as the Dreemurr residence's TV, the Dreemurr and Holiday families used to gather together and watch him. However, as each member of the group gradually stopped watching TV, Tenna was left completely unused. When the Roaring Knight appeared, he was promised relevancy once more in exchange for keeping the party busy.

Seeing that he cannot convince the party to turn back, Tenna initiates an encounter serving as the game show's "final challenge". Upon his defeat, Tenna admits that he just wants to be watched. Ralsei tries to tell him that a Darkner's feelings are irrelevant, but Susie interjects. She recounts her own feelings of inadequacy and moving from place to place, but notes that she eventually found the right people and now has a group of friends. She promises that if he agrees to let them go, she and Kris will find someone in the Light World who would use him. Hopeful and re-invigorated, Tenna agrees to release Toriel. However, as he does so, he is suddenly struck down by the Knight, who attempts to capture Toriel itself. The party engages in battle against the Knight, but they are defeated. As Undyne arrives as a result of Toriel's police call earlier in the night, the Knight turns its attention to her and captures her instead.

Susie and Kris pursue the Knight into the Light World, with the Dreemurr residence Fountain remaining unsealed. The two trail the Knight and Undyne to the previously sealed-off shelter, which appears to have a Dark Fountain inside. The door is closed shut before they can enter, causing the frustrated Susie to bang

This Chapter is primarily set in TV World, a Dark World created in the Dreemurr residence's living room. Its antagonist is Tenna, and its Shadow Crystal boss is the Roaring Knight. This Chapter also has a standalone alternate route, the Sword Route.location within a new Dark World. After reuniting with Ralsei, Susie inquires if he can visit the Light World and go to the Festival. Ralsei reluctantly explains that, as a Darkner, he cannot inhabit the Light World as the Lightners can. Ralsei states that the Dark World is merely an alternate view of the Light World given form from a Dark Fountain. When the Fountain is sealed, the Dark World, along with its Darkner inhabitants, ceases to exist. Susie confronts Ralsei about his explanation, but they are interrupted by Tenna's sudden appearance. He cues his assistant Mike to play his VHS introductory tape, culminating in Tenna physically appearing in front of the trio. He and Mike then properly set up the game show, Mr. Tenna's Marvelous Mystery Board: TV Time. Susie initially refuses to participate, but Ralsei convinces her to try it. The party partakes in two rounds of The Legend of Tenna, interspersed with visits to the Green Room. Meanwhile, Tenna secretly calls his subordinates about something "in the purple cliffs". When Susie overhears one such call following the second round, the party sneaks out of the Green Room to investigate. They eventually reach the Cold Place and discover Toriel, asleep but imprisoned in a gachapon ball. Tenna catches them hiding and sends them back to the show The party refuses to continue the game and demands Tenna let them seal the Dark Fountain. This prompts Tenna to forcibly subject them to a malfunctioning third round. As he undergoes a mental breakdown, the party manages to escape into the greater TV World.

After a poor landing near Cyber City, Susie gets healed by Ralsei, and she becomes interested in healing magic. In her excitement, she takes off with Ralsei at a forked road, forcing Kris to explore on their own. While exploring the city, Kris reunites with Noelle, who had escaped capture. In Kris's company, Noelle learns to be less fearful. In Ralsei's company, Susie learns to cast UltimatHeal, a weak healing spell. Eventually, the party reunites, but they and Berdly are captured by Queen as they approach her mansion.

The party is imprisoned within the mansion, but they manage to escape with Lancer's help. Kris, Susie, Ralsei, and Berdly unite to rescue Noelle. While navigating the mansion, Berdly learns to be less arrogant after failing to solve multiple puzzles. The party ultimately confronts Queen on the mansion's rooftop, where they fight her and Berdly, who she has caught and enslaved with a control wire After fighting Queen, she explains the origin of the Cyber World: it was created by the Roaring Knight, who has since taken its leave. In the Knight's absence, Queen plans to force Noelle to expand the Cyber World by making a Dark Fountain. She then deploys her mecha, GIGA Queen, to attack the party.

After defeating GIGA Queen, Queen encourages Noelle to make a Dark Fountain from her own will before shutting down. With everyone in agreement, Berdly attempts to make a Fountain, but is stopped by Ralsei, who explains that an excess of Dark Fountains would result in an apocalyptic event known as the Roaring. Learning this prompts Queen to abandon her plans.

Kris seals the library Fountain, and the Lightners all return to the Light World, waking up inside the computer lab. Berdly, Noelle, and Susie leave the computer lab, while Kris transports its various items to the school's supply closet, allowing the Cyber World's recruited Darkners, including Queen, to populate Castle Town.

This Chapter is primarily set in the Cyber World, a Dark World created in the library's computer lab. Its antagonist is Queen, and its Shadow Crystal boss is Spamton NEO. This Chapter also introduces the Weird Route, where the player forces Noelle to freeze enemies in order to make her stronger.

Synopsis
The Chapter opens with Toriel calling out to Kris, as she discovers a knife and acts shocked. Shortly after, Toriel enters their room, revealing that she realized Kris ate the entire pie she had baked yesterday.

Kris arrives late to school and meets up with Susie, who declares her desire to return to the closet Dark World. As they approach the closet door, Noelle arrives and invites the two to study with her and Berdly at the library. After she leaves, Kris and Susie enter the supply closet and arrive in Castle Town. However, they find it is as empty as when they first visited, with only Ralsei greeting them.
Per Ralsei's instruction, Kris collects all of the objects from the unused classroom and brings them to the closet. This populates Castle Town with the denizens of Card Kingdom, with many of the new residents setting up shops. Eventually, Susie mentions that the pair have homework to do, prompting Ralsei to banish them from the Dark World until they start their homework. Before the two leave, Lancer and Rouxls Kaard enter Kris's inventory. Kris and Susie go to the library to work on their project and discover a Dark World inside the computer lab. Upon entering, they meet Queen, the ruler of the Cyber World, who holds Noelle captive for her plans for world domination. When Werewires block the path, Ralsei arrives and casts Pacify, then regroups with Kris and Susie. The party fights against Queen's minions and later confronts Berdly, who had voluntarily joined forces with Queen.

At Card Castle, Lancer's father King fights the party to prevent them from sealing the Eastern Fountain. However, he is ultimately defeated with Lancer's help. Afterward, Kris and Susie say their goodbyes to the Dark World and, via the power of Kris's SOUL, seal the Fountain.

Kris and Susie return to the Light World together, finding themselves in the unused classroom at the school, surrounded by toys and board games that represent the Dark World they ventured through and the characters they met. Kris and Susie agree to return to the Dark World the next day.

After Kris returns home and goes to bed, they shamble out of bed in the middle of the night, seemingly struggling to walk. They rip out their SOUL and throw it into a birdcage, before pulling out a knife and looking at the camera with a menacing smile as their eye glows red.

Deltarune Chapter 1, subtitled The Beginning (JP: はじまり Hajimari), is the first Chapter of Deltarune. It was released as a free demo disguised as a survey for PC and Mac on October 31, 2018. It was later released for Nintendo Switch and PlayStation 4 on February 28, 2019.[1][2] It was released for PlayStation 5 alongside Chapters 3 and 4 on June 4, 2025. It was released for Nintendo Switch 2 alongside Chapters 3 and 4 on June 5, 2025.
The Chapter opens with the introduction, where the player is guided by the voice to create a vessel. Said vessel is then abruptly discarded following its completion, and the player is instead assigned to a fixed vessel: Kris, a human teenager who lives with their mother Toriel in Hometown.
At school, Kris is tasked to work with Susie, an intimidating reptilian monster, on a group project. During class, Susie and Kris are sent to retrieve chalk from the school's supply closet. However, they find out that the room is a pitch-black abyss. The door suddenly slams shut after they enter, and the floor gives way beneath them, leading the pair to fall into a mysterious Dark World.

Within it, the pair meet Ralsei, a kindly dark prince. He reveals that the three of them are the heroes of the legend of DELTA RUNE, destined to restore balance to light and dark by sealing Dark Fountains. During their adventure, they meet Lancer, a self-proclaimed "bad guy" determined to stop them from reaching his kingdom's Dark Fountain. Feeling undervalued, Susie leaves Kris and Ralsei for a time and teams up with Lancer. Susie's friendship with Lancer helps her become more compassionate. After Kris and Ralsei defeat Susie and Lancer, they join the party. Susie telling Lancer that they will likely fight his father prompts the latter to betray them and lock them in Card Castle's underground prison. Susie escapes and fights Lancer, just to miss the last attack and promise him she and the party will not hurt his father. As such, the two become friends again.

ACTing primarily resolves a fight peacefully. This command is exclusive to Kris, and lets them "execute various behaviors". Most ACTs in the menu do not cost TP, as "it's not magic". Kris selects an enemy, and can choose from one or more ACT options unique to that enemy. Occasionally, a side description for the ACT displays.

Check
The Check ACT is available in nearly all encounters, which usually provides a sentence about the selected enemy. Starting with Chapter 2, Kris's solo ACT typically earns a higher Mercy percent than an ally's S/R/N-Action.

ACTs can also require both Kris and a party member, or rarely, all of them, which spends their turns. This is indicated by their battle icon in front of the text. These team ACTs usually grant more Mercy than solo ACTs combined, and can have Kris either order or also perform with allies.[7][8]

Some ACTs have extra effects besides increasing the Mercy percent. It can range from: altered stats, status effects, require player input, cause costume changes, or have unique sounds, such as snd_ralseising1.

There are situational ACTs, which may be needed to earn the wanted end result for a Chapter:

In Chapter 1, the "Warn" ACT is sometimes crucial to end battles peacefully when Susie is in the party.
The MAGIC command is exclusive to Susie, Ralsei, and Noelle. With enough TP, a party member can cast a spell from the Spell menu, which can either harm/spare the enemy or benefit the party. Its effectiveness is mostly based on the character's Magic stat.

Susie's spells initially are attacks, and deal large damage to an enemy. Attacks do more damage if the input is timed correctly, and damage is partially based on her Magic stat.
In Chapter 2, Susie learns a healing spell, which gets renamed and improves as the story progresses.
In Chapter 5, Susie is able to cast a spell that spares Tired enemies.
Ralsei's spells are supportive: he can heal the party or spare Tired enemies.
Noelle's spells are a mix of attack and support. She c

When an encounter begins, the party is presented with a battle formation consisting of up to three enemies. The enemies available vary based on which overworld encounter is triggered in each location.

To avoid hostile Darkners in the overworld, Kris can try to stay out of their line of sight or run via holding the [CANCEL] button while moving. Some encounters cannot be avoided, such as bosses, being initiated via cutscene, or enemies that fully block Kris's path.

While Deltarune's combat system is similar to the encounters in Undertale, it features distinct mechanics: party members, a TP meter, and status effects. The battle menu has names and icons of party members, their current HP, and the commands: FIGHT, ACT/MAGIC, ITEM, SPARE, and DEFEND.

Beside stat changes, some equipment have unique abilities that can aid in battle. In Deltarune, up to three party members are controlled on the battlefield. Each character gets a chance to use their turn, with Kris always going first. Since multiple commands can be performed in the same turn, it is possible to end battles quickly. Commands can also be cancelled and changed as long as the last character does not have a set command. Additionally, each command occurs in a particular command order. At the start of the party's turn, narration or character dialogue can appear at the bottom of the screen:

When an encounter starts, the flavor text reflects the nature of the encounter. For example, "Rudinn and Hathy blocked the way!"
Afterwards, the flavor text describes or relates to one of the enemies in battle. It may also change depending on a chosen command, or describe a party member's command, whether it is from doing ACTs, or as a story element.

Speech pattern
Susie tends to be vulgar, swears frequently, and occasionally speaks informally.[39] Her casualness includes referring to others as a "dude" in a gender-neutral sense.[40] Susie's dialogue tends to have words in uppercase letters for emphasis, or extra question marks and exclamation marks to reflect her confusion.[32] When writing or typing, Susie occasionally makes typos.[41][42] This is sometimes reflected in her spoken dialogue as well.

Noelle is usually very timid, easily flustered, unassertive, struggling to voice her own feelings. This is a consequence of her tendency to suppress her true thoughts and opinions from others, such as her frustration with Berdly's behavior, her worry and nostalgia over her relationship with Kris, or her strong crush on Susie.

She becomes braver from her adventures in the Cyber World, standing up to Queen near the end of Chapter 2, losing her fear of mice,[9] and angrily shaking Berdly when he admits his attraction to Susie, later fantasizing about doing it again.[10] Eventually, she is able to stand up to her mother on the phone, after the Festival, even boldly confessing her feelings for Susie in front of her.[11] Noelle considers herself "weird" over some contradictory aspects of her personality.[12] In fact, there is a certain dissonance between some emotions she manifests and her actual interests. For example, she reproaches Kris for their pranks yet likes feeling scared since she associates fear with being comforted,[13][14] and feels nostalgic over them. Her father describes her as "defenseless" and wary of everything, including horror movies, bugs, and Santa Claus.[15] However, she has also expressed a desire to adopt what she and Susie jokingly considered "a severed hand" as a pet. This is also reflected in her inner attraction to the idea of Susie bullying her, in addition to her crush on her.[16] Her impeccable demeanor is, in truth, partially a facade she constructed ever since her sister's disappearance.[17] Noelle secretly feels trapped, following the same routine every day and has thought about what would happen if she were gone,[18] but believes herself to be too weak to change and follow through, thus longing for a freedom that she can not have.[19] This strong sense of dissociation between her mind and behavior is kept hidden from her family and friends, but might manifest in some of her odd habits, such as going to 'Sans only to stare blankly in f

The next day, Noelle attempts to volunteer to read in class, only for Berdly to interrupt her and volunteer instead. After class, Noelle finds Kris and Susie in front of the school closet, and invites them to study at the library with her and Berdly. Susie awkwardly accepts. If Kris talked to Noelle about Susie in Chapter 1, Noelle nervously gifts Susie a lunchbox of chalk before running off.

It is later revealed that Noelle had fallen into the computer lab's new Dark World. Alone, she pleads for help before she is captured by Queen, who intends to have Noelle become her "willing peon", and possibly roboticize Noelle's face.[48] Despite being relocated a few times in Cyber Field, Noelle appears in a blue roller coaster, having been persuaded by Queen to impede the party.[49] Instead, Noelle focuses on Susie and compliments her roller coaster. She is promptly replaced by Berdly. Offscreen, Noelle escapes and attempts to hide from Queen.Later, Kris finds Noelle in Cyber City, and she joins Kris's party to hide from Queen and Berdly's antics, even wearing a box with a roboticized face drawn on as a disguise when Queen is nearby, to which Queen comments on the face's coolness repeatedly. In the city, Noelle becomes fascinated with the Dark World and correlates it to Dragon Blazers,[50] gradually overcomes her fear of mice,[51] and becomes nostalgic about her childhood[52] as her sprite briefly changes to a younger silhouette when walking behind a building. When Noelle and Kris reunite with Susie and Ralsei, she eventually gets captured by Queen and sent to her own room in Queen's Mansion.

On the Weird Route, the actions of the player serve to enhance some of her darker traits and her desire for power. She becomes enticed with the idea of becoming stronger in order to break free from what she sees as her predetermined role, in spite of her initial horror.[21] This also makes her grow bolder, as shown by how, after returning to the Light World, she directly asks Susie about her tail,[22] showing no embarrassment. When Susie doesn't have money to buy food at the Festival, Noelle just smiles and offers her hundreds of dollars worth of bills without hesitation.[23] Eventually, she admits to herself and Kris that what truly frightened her was not their actions toward her, but how much she wanted to be led down such a path.[24] Like her parents, Noelle seems fond of Christmas and makes many references to the holiday,[25] including calling Kris "Krismas" like her parents do and using Christmas-themed pencils.[26][27] Along with Jockington, she is a member of their school's cross country team Along with Berdly and Susie, she enjoys playing video games like the Dragon Blazers[29][30] and Blood Crushers[31] series. She compares the Cyber World to video games,[32][33] and likes eerie video game glitches.[34] She seems familiar with meme culture, believing Susie made a pop culture reference.[35] Noelle appears to dislike meat[36] and animal products broadly. She has decreased healing from Darkburgers, asks if the stall food at the Festival has "REAL octopus" in concern,[37] and implicitly states a preference for soymilk over animal milk.[38] By contrast, she heals extra from the unused GigaSalad [39] and her fridge is stated to be stocked with greens.[40] While willing to eat meat (Noelle will still consume a Darkburger, while she will only pretend to drink S.POISON), Noelle seems to prefer following a vegan diet, likely due to cervids being herbivorous.

Appearance
Noelle is a teenage, reindeer-like monster with short brown fur. The top of her head has two three-pronged, rounded velvet antlers, two deer ears on the side, and thick, long golden blonde hair. Her face has large eyes with eyelashes, freckles on her cheeks, a snout with a red nose and buck teeth. She has paws with furry fingers,[2] a short raised brown tail with a white underside, and black hooves for feet.

Her clothes consist of a red and green checkered V-neck sweater with black sleeves, which is over a white button-up shirt, and a black skirt. Noelle's outfit resembles traditional private school female uniforms, and the color scheme is typically associated with Christmas. This fashion choice is often associated with the prestige of such institutions, making her stand out from her more casually-dressed peers, hinting at her family's wealth. As Noelle has hooves rather than feet, she cannot wear normal shoes.[3] In the Dark World, Noelle's hair is pale blonde and her fur has a slight pink tint. She wears a long white hooded cloak with long wide sleeves, always with the hood down. Unlike her Light World appearance, where she smiles by default, she has a neutral, unsmiling expression in the Dark World. Personality
Noelle comes across as friendly and cheerful, and is often seen smiling and laughing. She is considerate, helping Alphys retrieve chalk and Berdly and Kris with studying and homework.[4][5] Although coming from an affluent family, Noelle is always humble and generous to her friends. Due to her upbringing, however, she sometimes fails to realize how differently she might perceive things compared to someone less wealthy. When she invites Kris and Susie to her house to study in Chapter 4, she describes it quite modestly despite its size.[6] During the Festival in Chapter 5, when Kris attempts to buy a $13 cinnamon roll from QC, which Susie considers expensive, Noelle casually offers to pay for it instead.[7]

Noelle has an interest in the Angel or some aspects of it, as she frequently wears the small angel wings from her childhood,[41] and enjoys the idea of having large angel wings and flying.[42]Noelle speaks in a proper manner, often ending sentences with a "fahaha". Her speech mannerisms are very polite even in the Japanese localization. She often uses minced oaths and colorful phrases such as "excheese me". Noelle also tends to get flustered and stutter, especially in Susie's presence. At times, Noelle mumbles, which can occasionally be represented with the tinynoelle font,[43] or be in parentheses.[44]Noelle" is presumably a pun (or just based on) Noël, a given name which is French for "Christmas". The rest of her family also have names associated with Christmas. Her name could have also potentially been chosen simply due to its association with Christmas According to one of Tenna's reminisces, Noelle and her family would also spend time at the Dreemurr residence to watch the specials with the Dreemurrs. One day, however, an unspecified tragedy occurred, and it is implied that Dess either died or went missing. A short time after, Noelle attended a spelling bee, and refused to spell the word "December", causing Berdly to win.

At an unspecified point, Noelle often accidentally forgets the key to her home. Thus, she would often stay at the Dreemurr residence. Kris would also often assist Noelle by helping her break into her own room.[46] Noelle is first seen in Alphys's classroom, where she cheerfully greets Kris when spoken to. When she realizes that they do not have a partner for the upcoming group project, Noelle offers to include Kris in a group of three with Berdly, much to his protests. When Susie enters the classroom and is quickly sent away to retrieve some chalk, Noelle attempts to reassure Kris.[47]

After Kris returns from Card Kingdom, Noelle can be found in the hospital visiting her bedridden father, where they converse about Dragon Blazers III, Susie, a

Appearance
Berdly resembles a large avian with blue feathers, a yellow beak, and yellow legs. He wears black framed glasses, a collared white button-up shirt with striped sleeves, and a black shirt layered underneath. Berdly's head can rotate 180 degrees, similar to an owl's.

In the Dark World, Berdly's feathers are a lighter shade of blue, and his scleras are bright green. He wears a "Smart Scouter" on his head that consists of an orange tinted lens and two white and green pointed headsets. His ensemble consists of an orange cape, futuristic white armor with pointed shoulder guards, bracers and leg armor. He wears a black bodysuit underneath this armor, and has green cloth wrapped around his waist. In battle, Berdly uses a green laser halberd with a yellow ax blade and yellow eyes embedded into the blade's head. Despite not wearing glasses, his portrait portrays him with them. Personality
At first Berdly acts very superior and arrogant. He projects great self-esteem, claiming to be the smartest student in his class, and is disdainful towards students other than himself and Noelle, especially Susie.[2] He feels immense pressure to appear intelligent and constantly brings up his academic success. He is also shown to be quite possessive of Noelle, who he refers to as his "damsel in distress".[3] Despite his initial rudeness, he grows more considerate and friendly after the events of Chapter 2. Berdly is very insecure about his intelligence, but he feels the need to maintain his facade as a genius. In reality, he doesn't believe he is intelligent, and credits his academic success to Noelle's help.[4] This is his primary motivation for working with Queen, as he wants to create a world in which he and Noelle will always be idolized.[5] Berdly's obsession with intelligence stems from his childhood, with him describing himself as having been a "forgettable little bluebird". He first received praise for winning a local spelling bee, which led him to create his genius perso

Berdly is also severely unaware of how others perceive him. For instance, he is unaware of the fact that Queen is using him, and also believes that Noelle (and later Susie and Kris as well) is in love with him.[8] Although he does not reciprocate this perceived crush, he felt the need to pretend to because of how much he values Noelle's friendship.[9] He also has trouble distinguishing sarcasm.[10]

Despite his air of superiority, Berdly cares for his friends. He is shown to prioritize Noelle's safety over his own and attempts to protect her in the Weird Route.[11] Although he believes his experience in the Dark World is a dream, he is kinder to Kris and Susie afterward, even expressing a desire to spend time with them.[12] When Noelle tells him that she would rather go to the Festival with Susie, Berdly is supportive and offers to be her wingman.[13] Berdly is a huge fan of video games (excepting mobile games), especially Super Smashing Fighters. He makes many references to video games and video game terms, such as wavedashing, which he considers cheating, likely as a way to excuse failures. Berdly seeks a partner who shares this interest in video games. Berdly also makes references to other classic "nerdy" media, such as when he references Star Wars by saying "May the smarts... NOT be with you!" Berdly appears to desire having nipples. As a non-mammalian, he does not have nipples, but despite this, he chooses to portray himself with them on the statue he commissions from Sweet Cap'n Cakes. When Queen questions whether he has nipples, he responds by saying he will soon in their "IDEAL WORLD", implying it is a dream of his.[14] This idea is further reinforced by his ball-toss prize plushie having nipples as well

Susie is outspoken, rude, sarcastic, brutally honest, and quick to insult.[9] She is selfish and rebellious, tending to protest or favor her own interests.[10] At times, she threatens with physical violence, occasionally as a joke.[11] In a Dark World, Susie generally has no qualms with FIGHTing Darkners unless she is friends with them.[12] Despite Susie's crudeness, she is gentle and mindful to those who are kind to her. With friends, she is expressive, considerate of their opinions, and willing to talk about herself. Susie enjoys being with her friends, and often favors teasing them. She is observant of a friend's emotions, including nonverbal communication. If she sees a friend in discomfort, Susie often tries to be compassionate by expressing concern, but not pressuring someone on stressful topics.[13] Susie is also loyal, readily wanting to assist a friend if they are in danger or troubled.

In general, Susie enjoys childish antics and causing mischief. This ranges from dressing up as a box,[14] wanting to enter a freezer,[15] or chasing Maus on all fours.[16] She likes compliments, and is easily flattered. Susie enjoys receiving gifts, and is possessive of items given to her.[17] She is occasionally particular with items, as she dislikes wearing ribbons, and will refuse to wear them before obtaining the RedRibbon in Chapter 5. She also can and will refuse certain equipment choices, such as having armor removed[18] or re-equipping Mane Ax. Susie is gluttonous, as she often talks about food, wants Ralsei to make food for her[19][20], and even complains if Ralsei is given Dark Candy.[21] She eats almost anything, such as chalk,[22] and she reacts positively to the non-food in her refrigerator in Ralsei's castle. Susie favors moss,[23] Darkburger,[24][25] marshmallows,[26] Phanta, and peppermint, such as the Light World version of ReviveMint. She also drinks milk that Alphys leaves in the alley,[27] though Alphys believes her to be a cat she named "MewMew".[28]

Susie is a tall, teenage reptilian monster with lavender purple skin who is implied to smell "kinda earthy and smokey".[2][3] She has thick, messy and long aubergine hair that goes below her shoulders, with her bangs often swept to the right. Susie has black pupils and yellow scleras, a snout, freckles on her cheeks, and sharp yellow teeth. Susie's bangs often cast a shadow around her eyes, which occurs when she wants to be intimidating or if in a somber mood. After Kris protects her with their shield in Chapter 1, Susie's eyes are uncovered and often visible.

Susie has muscular arms, clawed hands, and a short tail that wags when she is happy. She is embarrassed by the latter,[4] and refuses to let others see or acknowledge it.[5] Her Light World attire consists of a royal purple unzipped long-sleeved jacket,[6] a white shirt, light blue torn and baggy jeans, and a pair of black shoes. In the Dark World, Susie's skin changes to orchid purple, and her hair is dark plum colored. Her clothes are replaced with a sleeveless Dark Jacket[7] with purple-trimming, a sleeveless dark purple shirt, a black belt with a golden heart buckle, dark plum trousers,[8] and black boots with golden soles. Around Susie's wrists and triceps are sets of black bracelets with Susie is transparent with her emotions, which is reflected during cutscenes and in the midst of an encounter. She often makes an exaggerated expression and pose when angered, surprised, or amused. Some of these sprites occasionally depicts Susie's sclera and teeth as white instead of yellow.

Susie appears to be left-handed. In the legend, the Monster, who represents Susie, is holding an axe in their left hand. Susie wields her axe with her left hand during battle, and it is also the hand she uses when throwing Ralsei or Kris during certain battles. Despite this, she destroys the Last Prophecy tapestry with her right hand in Chapter 4.

History
The existence of Ralsei is known in the Light World through the prophecy, as Catty references his appearance during her church reading.[130]

Before Ralsei met Kris and Susie, he lived alone in Castle Town, waiting for the two fated heroes to arrive,[131] and did not have subjects despite being a prince.[132] To prepare for their arrival, he spent time rehearsing the prophecy,[133] created a training Dummy,[134] hugged it,[21] and wrote a Manual for the heroes.[77]

The story Ralsei tells Jackenstein's pumpkin mentions a prince of a lonely kingdom who had "scarcely known anyone else",[122] which may imply that Ralsei was not completely alone and had some communication prior to the events of Deltarune.

Ralsei is usually reluctant to get angry, but sometimes may show mild irritation.[34] At most, he appears disappointed when Kris or Susie act mean. Consistent unjust treatment can cause Ralsei to become openly resentful[35][36] and jealous,[37] to the point of lashing out at and attacking Flowery.[38] However, even in his resentment, he retains his kindness. His attacks are intentionally aimed to avoid hurting Flowery,[39][40] and after Flowery is slashed by the Knight, Ralsei desperately attempts to heal him despite knowing it is futile.[41]

Ralsei cares immensely about his friends, and is willing to protect them with his life,[42] and to take any pain on behalf of them.[43] He also supports others establishing friendships, as he favors helping Lancer despite his status.[44] Believing that his purpose is to make Kris and Susie happy,[45] Ralsei initially worries that his opinions or desires that do not directly benefit others are "selfish".[46] This guilt leads him to leave his room in his castle unfurnished,[47] as he thinks that there is no reason for him to have anything personal.[48] He also considers friendship to be a responsibility he cannot fully fulfill as a Darkner,[49] which brings him sorrow, yet he views even this sorrow as selfish.[50]

However, it is shown that a part of Ralsei has always disagreed with these worries, making him express so-called "selfish" wishes and opinions as early as Chapter 1.[51][52] Ralsei greatly appreciates Susie reassuring him that he deserves to have his own room,[53] and later confesses to Kris that he feels as though he is developing his own opinions, likes, dislikes, desires, and fears.[54] When Kris reassures Ralsei that it is acceptable for a Darkner to feel this way, he becomes happy[55][56] and takes this sentiment to heart, later repeating it to Pink.[57] Ralsei is still willing to put Kris's preference over his own when choosing drink vouchers for Flower Cafe,[58] but is thankful when receiving his actual favorit

When Ralsei removes his hat, his face and body resemble the members of the Dreemurr family, such as Asriel[6][7] and Toriel.[8] He has white fur, with an unkempt tuft on top of his head, two floppy ears, pink horns that point inward in his overworld sprite and outward for his hatless face sprite, and paw pads that he deems adorable.[9] When Ralsei's glasses are off, his eyes are visibly pink-colored with detailed eyelashes and what appears to be pink eyeshadow. Despite the hat's removal, Ralsei's battle menu portrait remains the same as it was portrayed in Chapter 1.
Starting in Chapter 2, certain details of Ralsei's robe change. His arms are no longer hidden beneath his robe, which now has long black sleeves, and the lower sweep of it appears uniform rather than tattered. The emblem on his chest appears to change from a heart to an inverted spade, with the latter matching Temmie Chang's early concept art. This element is only present on some of his sprites, with most of his in-battle sprites and some of his overworld sprites reverting to a heart emblem. Ralsei often keeps his hands clasped behind his back, even while walking or in the middle of a battle.

When DOWNed in battle, Ralsei usually disappears, leaving only his clothes on the ground. He kneels defiantly instead when fighting Pink while she is split[10] or Flowery
Ralsei is affectionate, and loves both giving and receiving hugs. He once hugged the Dummy to "test it out",[21] can perform Heal Prayer with a hug[22][23] and ask Kris to hug him instead of the Dummy.[24] Being complimented[25][26] or given affection easily flusters him, and he is often self-conscious,[27] citing this as the reason he concealed his face.[28] Ralsei is somewhat naive and innocent, as he readily forgives King when he feigns surrender,[29] but learns to not always be so trustful of others after King's ambush.[30] Ralsei is also responsible, encouraging Susie and Kris to do their homework and emphasizing the importance of education[

History
Years prior to the events of Deltarune, Kris was adopted by the Dreemurrs when they were a young child, and grew up in a loving family. However, since they lived in a town full of monsters, Kris often felt like an outsider. Kris once asked their adoptive parents when their "horns were going to grow in". In response, Toriel and Asgore bought a headband with red horns for Kris, who wore it for months.[119] At some point, Kris gained an interest in playing the piano.[108] They frequently played the hospital piano despite it missing "good keys".[120][121]

Growing up, Kris was very close with their older brother, Asriel. The two often spent time with their neighbors, Dess and Noelle, watching TV together and exploring the forests around town.[122] While the four were close friends, Kris and Noelle grew apart over the years. The cause for this is unknown. Kris had also wanted to befriend Bratty, as she was one of the "big kids". They willingly complied and retrieved food for her until she became sick.[123]

At some point, Toriel and Asgore divorced. While their family was broken, Kris and Asriel remained inseparable. On occasion, Asriel would buy Kris a hot chocolate at QC's Diner,[124] the place they used to frequent as a whole family.[125] One day, Asriel moved out to go to college, leaving Kris alone and without many friends, though they kept in contact before Hometown's internet outage.

When Kris is about to, or has ripped out their SOUL, they usually slouch and face towards the floor, causing their hair to conceal their face. Some of Kris's animations are more fluid in this state, and they display occasional bursts of movement such as leaping forward or swinging a hockey stick. Kris is capable of walking normally when their SOUL is removed, though it is significantly slower than their typical stride.[77] In this state, they can become exhausted easily. When devoid of their SOUL for too long, Kris changes to a sick, greenish color, and physically becomes sluggish, frail, and unable to walk. After regaining their SOUL, Kris's skin returns to its usual color, though their physical exhaustion persists.[78] Personality
Kris is quiet and introverted.[79] Their reticence causes others, such as Susie, to be more observant of Kris's body language to gauge their reactions.[20][80] Despite their quiet disposition, Kris has a proficiency in flirting, though they do not normally use it for romantic purposes.[81][82] Kris tends to speak in a "deadpan, mumbly voice", which causes others to occasionally repeat what they say.[83][84] However, during the events of Deltarune, Noelle notes that Kris's voice sounds unusual, as if it was "on speaker".[45] On the Weird Route, she notes that it is unrecognizably different from Kris's voice.[85]
Kris is not normally considered energetic. They have a history of not waking up on time, and often sleep through the start of class.[86] Kris also prefers someone else getting them to and from school.[87][88] Over time, they grew increasingly distant from their few friends.[89][90] Kris's side of their and Asriel's shared bedroom is also strikingly bare; the pair's game console rests underneath Asriel's bed, Kris's old children's books are stored in Toriel's classroom, and there is nothing on their shelves. It is implied that Kris enjoys reminiscing on their childhood, and that they are unsettled by the thought of growing up.[91]

While in a Dark World, Kris functions as the party's leader, issuing commands, giving equipment, and managing the team's inventory. During battles, Kris specializes in ACTing, and their ACTs have varying effects. Kris wields a sword to deal damage, and can summon a separate, pink shield when DEFENDing.

For the majority of the game, Kris is controlled by the player, with their choices transferring via Completion FILEs. Kris can move independently during cutscenes, or when they tear the SOUL out of their body.
In the Dark World, Kris's skin turns cyan blue, and their hair changes to a dark navy shade. Their normal clothes are also replaced with silver armor, which makes them resemble a knight. This includes a set of pauldrons on their shoulders, a cuirass for their upper torso, two cuffed gloves, and a set of silver boots. In addition to the armor, Kris gains a navy blue armless bodysuit, and a pink cape[70] (also referred to as a mantle[71] or an ascot[75]) that drapes across their right shoulder. The shading for their skin and armor is also used for their cape, which gives the illusion of blue stripes in a few of their sprites.

From the player's perspective, Kris often has a blank, neutral expression, and they tend to be still in cutscenes. Their stillness is often used for comedic effect, as they can suddenly become very mobile and perform a wide variety of movements; this includes dance moves such as a pirouette or the kozachok. During some non-scripted actions in the overworld, Kris's actions are only conveyed by narration, rather than as an animation.[76
Appearance
Kris is a human teenager with amber-colored skin and shoulder-length brown hair. A couple of stray strands of hair stick out at the back of their head, and their ears are often visible from the sides. Kris's bangs are somewhat unkempt and typically swept to the left, which casts a shadow over their eyes. In certain circumstances, Kris's eyes can glow bright red, like in the last cutscene of Chapter