Undertale – ★

💀 Asriel's Death

After returning wounded from the surface, Asriel died in his parents' arms and turned to dust, which scattered across the garden of golden flowers in the castle. Those were the very same flowers he had carried from Chara's village — so a part of Asriel remained there, mixed into those blooms 🌻

⚗️ Alphys's Experiments

Years later, Alphys began secret research: she wanted to find a way to bring something back to life using a powerful force called Determination. She injected Determination into the first golden flowers that grew in that garden — unaware that Asriel's dust was already there 🌸

🌱 Reborn Without a Soul

The flower came alive — but it had no soul. It was Asriel, yet he couldn't feel love, joy, or compassion. He tried to hug his parents, but felt nothing inside. That emptiness was terrifying. He also discovered something terrible: he could reset time, returning to life whenever he died — but everything would start over, and no one would remember what had happened ⏳

Over time, unable to truly care about anyone, he lost his way. He convinced himself: "In this world, it's kill or be killed." And that is how Flowey was born — a flower who knew everyone and everything, yet could love no one 💔

Asgore and Toriel buried them together beneath the golden flowers. This tragedy shattered their family — Asgore was consumed by grief and turned toward war; Toriel left for the Ruins, unable to bear the pain and no longer believing in fighting. And so the story of Chara and Asriel became a sad, silent legend in the Underground — a tale of two children who found love in each other, but never found peace in the world above 🌻💔

Chara climbed Mount Ebott for a sad reason — it wasn't a happy journey. The world above had been cruel to them, and they carried pain and loneliness. Near the peak, they tripped over a root and fell deep into the chasm, landing in the Ruins of the Underground. Hurt and afraid, they cried out for help — and someone heard them.

💛 A Family Found

Asriel, the son of King Asgore and Queen Toriel, found Chara lying hurt at the bottom of the cavern. He gently carried them home, and the royal couple welcomed Chara as their own child. For the first time in a long time, Chara felt truly loved. They and Asriel became best friends — like siblings, inseparable. Chara brought joy and hope to the Underground, though deep inside they still carried hurt and bitterness toward the humans above.

After some time, Chara fell gravely ill. Their final wish was simple yet meaningful: to see the golden flowers from their home village, blooming on the surface. But there was also a greater plan — one that could free all monsters. When Chara passed away, Asriel would absorb their soul, gaining enough power to cross the Barrier. Together, they would gather more human souls and finally break the seal, setting everyone free.

Chara died. With a broken heart, Asriel absorbed their soul, and the two — Chara within the soul, Asriel in the body — became one being. They crossed the Barrier and carried Chara's body back to the human village, holding the golden flowers. But the humans saw them and believed Asriel had killed the child. They attacked him with everything they had.

Chara, inside their shared form, wanted to fight back — they had the power to destroy them all. But Asriel refused. He would not raise his hand against anyone. Badly wounded and weakened, he made the painful journey back to the Underground. He collapsed upon the golden flowers in the castle garden — and died there too. Two lives ended that day, inseparable even in parting.

❤️ Frisk — Determination

The seventh soul, the last to fall. Red in color. Their starting items are the Stick and the Bandage. Determination is the power to keep going, to refuse to give up, to come back and try again. It's the strongest power of all ✨

🖤 Chara — The First

The very first human to fall into the Underground. Also carried a red soul of Determination, but their story began long before Frisk's. They were welcomed by Asriel and the royal family, but their journey ended in tragedy 🌻

🩵 1. Light Blue — Patience

• 🗡️ Weapon: Toy Knife

• 🛡️ Armor: Faded Ribbon

• 💭 Meaning: Knowing how to wait, keeping calm, not rushing. The soul of patience teaches us that sometimes we simply need time and perseverance ✨

• ⚡ Mechanic: Stay still when the attacks come — patience means knowing when to wait

🧡 2. Orange — Bravery

• 🗡️ Weapon: Tough Glove

• 🛡️ Armor: Manly Bandana

• 💭 Meaning: Facing fear, moving forward even when it feels scary. Bravery isn't the absence of fear — it's going forward despite it ⚔️

• ⚡ Mechanic: Keep moving — don't stop. Bravery means you keep going

💙 3. Dark Blue — Integrity

• 🩰 Weapon: Ballet Shoes

• 👗 Armor: Old Tutu

• 💭 Meaning: Staying true to yourself, standing by your principles. A soul that danced simply because it believed in what was right 💫

• ⚡ Mechanic: You fall with gravity and can jump — stay upright, stay true to who you are

💜 4. Purple — Perseverance

• 📓 Weapon: Torn Notebook

• 👓 Armor: Cloudy Glasses

• 💭 Meaning: Never giving up, even when things get hard. Keeping on trying, learning, and observing 📖

• ⚡ Mechanic: Stay inside the lines — stay on course, don't lose your way

💚 5. Green — Kindness

• 🍳 Weapon: Burnt Pan

• 🛡️ Armor: Stained Apron

• 💭 Meaning: Caring for others, protecting them, giving without expecting anything in return. Perhaps a child who always helped at home and protected those they loved 🥺💚

• ⚡ Mechanic: You cannot attack — you can only defend. Kindness is about protection, not harm

💛 6. Yellow — Justice

• 🔫 Weapon: Empty Gun

• 🤠 Armor: Cowboy Hat

• 💭 Meaning: Defending the vulnerable, doing what's right, speaking the truth. Someone who believed that justice mattered above all else ⚖️

• ⚡ Mechanic: You can shoot back — standing up for what's right

🐇 Snowdin Shopkeeper — The Bunny Merchant of Snowdin

✨ Who Is She?

The Snowdin Shopkeeper is a friendly, warm-hearted purple bunny monster who runs the very first shop you encounter in the game, right at the entrance of Snowdin Town. Her design was created by Temmie Chang, and she's often referred to as QC (in Deltarune, she works at "QC's Diner").

🛒 The Shop

• Cozy, warmly lit orange shop — a welcoming sight in the snowy cold ❄️

• Right next to a Save Point and the Snowed Inn, run by her sister

• She's got that classic small-town shopkeeper vibe — chatty and kind

📦 What She Sells

• Cinnamon Bunny — 22G 🐇 (heals 22 HP — cute AND tasty!)

• Bisicle — 45G 🧊 (heals 35 HP — eat one half at a time!)

• Tough Glove — 50G 🥊 (+5 AT, makes attacks stronger)

• Manly Bandanna — 50G 🧣 (+5 DF, stylish AND protective)

💛 Personality & Quotes

She's optimistic and community-minded. When you ask about life in the Underground:

"Life is the same as usual. A little claustrophobic... But... we all know deep down that freedom is coming, don't we? As long as we got that hope, we can grit our teeth and face the same struggles, day after day... That's life, ain't it?"

She'll also happily explain Snowdin's history — how some monsters settled here because they liked the cold after leaving the Ruins . She'll joke about Papyrus's puzzles and point you toward the library or her sister's inn if you need rest.

⚠️ Genocide Route Heartbreak

On a Genocide Run, the shop is empty. She's fled, leaving behind a heartbreaking note:

"Please don't hurt my family."

You can still take the items — and even the 758G from her cash register — but it feels terrible 💔

💚💜 Bratty & Catty — The Alleyway Gossip Girls

✨ Who They Are

Bratty and Catty are best friends who hang out in the alleyway in Hotland, just to the right of the MTT Resort. They sell stuff they found in the garbage dump — and yes, it's "good garbage" 😂 They're the most energetic, talkative duo in the entire Underground! ✨

📜 Appearance

• Bratty: A tall, green crocodile monster with fluffy yellow hair and a pink shawl with yellow and blue details 🌺

• Catty: A small, purple cat monster with black hair tipped in violet-blue, a gold earring in her left ear, and blue overalls with yellow buttons 🐱

Fun fact: Catty is an alley cat and Bratty is an alley-gator — it's a little wordplay! 😆

💬 Personality

They speak in sync, finishing each other's sentences and using words like "like," "totally," and "so" all the time — total teenage best friend energy! 🗣️ Both are huge, obsessed fans of Mettaton and absolutely gush over him constantly. Even though they seem like just silly gossipers, they're incredibly loyal to each other — best friends forever! ❤️

🛒 What They Sell

• Garbage — 25G 🍔

• Empty Gun — 350G 🔫

• Cowboy Hat — 350G 🤠

• Mystery Key — 600G 🔑 (opens Napstablook's house!)

🔄 Different Routes

• Pacifist/Neutral: They're always hanging out in the alley, gossiping about Mettaton and selling their things ✨

• Genocide: The alley is empty — they've fled. All items are free, but the silence feels eerie and sad... 💔

🍔 Burgerpants — The Stressed MTT-Burger Employee

✨ Who He Is

Burgerpants is the exhausted, sarcastic employee working at the MTT-Brand Burger Emporium inside the MTT Resort in Hotland . He's 19 years old, an orange cat-like monster, and the final shopkeeper you meet in the game . His real name is unknown — "Burgerpants" is just a silly nickname!

📜 Appearance

He's a lanky, orange furred cat-monster who wears a small hat with the letter "M" and a MTT uniform . His facial expressions are famously dramatic and exaggerated — he's got a whole range of stressed, deadpan, and over-it faces. Sometimes he's seen smoking a cigarette when talking to you.

😩 Personality

He's basically the ultimate burnt-out retail worker: sarcastic, cynical, and completely fed up with his job 😅 He originally wanted to be an actor, which explains all those dramatic expressions ! He rants about Mettaton, complains about his endless shift, and calls the Glamburger "700G of glittery nonsense." But underneath the frustration, he's actually pretty sweet — once you buy something, he opens up and calls you "little buddy" ❤️

🍔 What He Sells

• Starfait — 60G

• Glamburger — 120G

• Legendary Hero — 300G

• Mettaton Steak — 500G 💸 (most expensive item in the game!)

🔄 His Story

He used to admire Mettaton, but now he's just stuck working for him, overworked and underappreciated . Still, he keeps going — deep down, he hasn't completely given up on his dreams. He's just... really, really tired 😂

🍦 Nice Cream Guy — The Nice Cream Vendor

✨ Who He Is

The Nice Cream Guy is a friendly, light blue rabbit-like monster who travels all across the Underground selling his famous "Nice Cream" — a frozen treat that comes with a warm, uplifting message on the wrapper! His catchphrase: "Nice Cream! The frozen treat that warms your heart!" ❤️

📜 Appearance

He has light blue fur, a red nose, long ears, and a little tuft of hair on top of his head. He wears a bright yellow shirt with a vertical red stripe down the middle, red suspenders, and red pants. He's always seen beside his little cart with a yellow-and-red umbrella 🍦

😊 Personality

He's the ultimate optimist — even though he struggles to find customers, he never gives up hope! Before you talk to him, he looks sad with droopy ears and closed eyes, but the moment you speak to him, his eyes pop open and he lights up with excitement: "OH!! A CUSTOMER!!" 😄

He moves from place to place — first Snowdin Forest, then Waterfall, and finally Hotland, always chasing the next chance to share a smile and a sweet treat 🍦

🔄 His Story & Different Outcomes

• Pacifist Route: If you spared the Royal Guards in Hotland, they buy up ALL his Nice Cream! He's overjoyed, full of hope, and dreams of expanding his business ✨

• Neutral/Genocide Route: If the Royal Guards are gone, no one buys from him anymore. He gives up, closes his cart, and sadly says: "Life is suffering..." — a heartbreaking contrast to his usual cheerful self 💔

💛 What Makes Him Special

He represents perseverance and kindness — someone who keeps trying to bring happiness to others even when business is tough. He's just a sweet guy who wants to make the Underground a little brighter, one Nice Cream at a time 🍦✨

🔳 W.D. Gaster — The Royal Scientist

✨ Who He Is

W.D. Gaster is the mysterious, hidden character of Undertale. He was the Royal Scientist before Alphys, appointed by King Asgore, and the creator of the CORE — the magical power plant that supplies electricity to the entire Underground . His name comes from WingDings, the font in which his messages are written .

📜 His Story

Not much is known for certain — he exists mostly in secrets, rare "Fun Value" events, and game files. From the Gaster Followers, we learn:

• He was brilliant — so brilliant that Asgore waited a long time before naming a replacement

• One day, his life was cut short — he fell into his own creation, and was shattered across time and space

• He was erased from existence — most monsters don't even remember him existed

🔍 What We Find

• Entry Number Seventeen: A mysterious text in Wingdings that reads: "DARK DARKER YET DARKER... THIS NEXT EXPERIMENT SEEMS VERY VERY INTERESTING"-

A strange, grayscale figure sometimes called "Mystery Man" can be found in a secret room in Waterfall only by modifying game files

• He is heavily connected to Deltarune, Toby Fox's follow-up project — though his exact role there remains mysterious

🖋️ The Mystery

Gaster is the ultimate enigma of Undertale. He's everywhere and nowhere — spoken of only in whispers, his existence half-erased, his fate unknown. He's the hole in the story that players keep trying to fill ✨

🐢 Gerson — The Hammer of Justice

✨ Who He Is

Gerson is an elderly tortoise-monster who runs a small shop in Waterfall . He's a legendary figure known throughout the Underground as "The Hammer of Justice" — a hero from the war between humans and monsters . Undyne has looked up to him since she was little and calls him the strongest monster who ever lived. Nowadays he's retired from fighting, running a shop and studying history. He laughs with a hearty "Wa ha ha!" ✨

📜 Appearance

He's an olive-green turtle monster wearing an archaeologist's outfit — a pith helmet, a large magnifying glass, and a pointed beard . His shell is dark brown with a pale rim, his teeth are crooked and yellow, and his right eye is always closed

🧡 Personality

Friendly but a bit forgetful and scatterbrained — he can't always remember where Temmie Village is or why Asgore is called "Fluffybuns" 😅 He's wise and full of history, though sometimes grumpy if you ask him to repeat himself . He doesn't think of himself as a hero despite his fame — he's humble, kind, and advises the player to stay careful . On the Genocide Route, he's remarkably calm: "I've lived too long to be afraid of something like you."

📖 About Gaster

Like most monsters, Gerson has no memory of Gaster, though he is one of the oldest living monsters and knows much of the Underground's lost history

🕷️ Muffet — The Spider Queen

✨ Who She Is

Muffet is a charming yet shrewd spider monster who looks after all the spiders in the Underground! She has lavender skin, five eyes, six arms, and a mischievous little smile — that signature "Uhuhu~" laugh 😄 She wears a lovely red outfit with little bows and is always serving tea — two cups in her upper hands, two teapots in the middle ones. She also has a very special pet: a giant cupcake with spider legs 🧁🕷️

🧁 Her Bakery

She runs a little sweet shop in Hotland, selling spider donuts and spider cider for rather high prices — but it's not about greed! Every coin goes toward helping the tiny spiders trapped in the Ruins, who can't cross the freezing cold of Snowdin. If you've ever bought something from her little relatives before, she'll remember you and won't cause any trouble 💛

🕸️ Personality

She might seem a bit greedy or threatening at first, but deep down she is fiercely protective and loyal to her spiders above all else. Once she sees that you would never hurt a spider, she apologizes and lets you pass peacefully. She is kind to those who are kind to hers ✨

📖 About Gaster

Just like almost everyone else, Muffet has no memory of Gaster at all. She keeps busy running her bakery and looking after her little family, unaware that pieces of history have faded away from the Underground 🕷️

🦖 Monster Kid — The Little Hero Wannabe

✨ Who They Are

Monster Kid is an energetic little yellow monster who lives in Snowdin! They have no arms, a little tail, and cute spikes on the back of their head. They're always wearing a yellow striped shirt — just like Frisk's! Because they don't have arms and they run everywhere, they trip and fall a lot 😅 They're clumsy but they never let that stop them. They're super friendly, always saying "Yo!" and "C'mon, dude!" — they try so hard to look cool and tough, but they're actually just a sweet, innocent little kid 💛

⚡ Their Hero — Undyne

Monster Kid absolutely adores Undyne! She's their hero, their role model, the coolest person in the whole Underground in their eyes. They want to be strong and brave just like her someday. They follow her around, watch her train, and tell everyone how awesome she is. They're earnest and sincere — when they believe in something, they believe with their whole heart ✨

🤍 About Frisk

Monster Kid thinks Frisk is awesome! They noticed right away that Frisk wears a striped shirt too — "Hey, you're a kid just like me!" 😄 They get so excited when Frisk stops to talk. Frisk is kind, never laughs when they fall down, and always helps them up. Monster Kid looks up to Frisk too — here's someone who's gentle but brave, just like... well, maybe just like they want to be when they grow up 🌟

📖 About Gaster

Like almost everyone else, Monster Kid has no memory of Gaster. They're just a happy little kid running around Snowdin, dreaming of being a hero. They have no idea that pieces of history are missing from the Underground — they just enjoy each day as it comes, clumsy steps and all 💛

👻 Napstablook — The Quiet Musician

✨ Who They Are

Napstablook is a gentle, soft-spoken ghost who lives in Waterfall, surrounded by glowing mushrooms and peaceful music. They have a simple, quiet appearance — pale and wispy, with sad, watery eyes that always look like they're about to cry. They wear a pair of simple black headphones over their head, listening to melodies that only they can truly hear 🎧 They are a musician at heart — they compose dreamy, calm music that drifts through their little home, and they invite anyone who visits to just sit and listen for a while.

💛 Their Gentle Soul

Blooky is very shy and easily feels small or unimportant — they apologize often, worry they're bothering people, and sometimes they feel like they don't matter much. But they are incredibly kind and polite. Even if you were ever mean to them, they'd still welcome you into their home like an old friend. They don't ask for much — just to be left in peace with their music, and maybe to have someone listen to their songs sometimes. They're sensitive, sweet, and far stronger than they give themselves credit for 💧

🎵 About Frisk

Frisk has visited Blooky's home sometimes when walking through Waterfall. Napstablook thinks Frisk is very nice — someone who doesn't laugh at their music or tell them to cheer up. Frisk just sits there and listens, and that means more to Blooky than they could ever say. They feel safe around Frisk, and sometimes they even play their favorite songs just for her ✨

📖 About Gaster

Just like everyone else, Napstablook has no memory of Gaster. They might sometimes feel a strange, quiet echo in the air when they're composing music — like someone else once made melodies in this world too — but they can't place where that feeling comes from. It's just another quiet mystery in the Underground, and Blooky is too gentle to wonder too deeply about it. They just keep playing their music, day after peaceful day 🌊

🌱 Chara — The Human Who Became Family

✨ Who They Are

Chara was the first human to fall into the Underground, long before Frisk. They were found by Asriel Dreemurr, brought home to Asgore and Toriel, and welcomed with open arms as their own child. They were loved deeply, and they loved their monster family in return. But Chara didn't come from the surface to stay — they had a painful past there, and they carried a lot of hurt and anger in their heart. Despite that, they found true happiness with the Dreemurr family 💔

📖 Their Story

Chara and Asriel were like brothers and sisters — inseparable, best friends, family. But their time together was cut tragically short. After they passed away, their spirit remained, lingering in the shadows of the Underground. They are tied to the power of the human souls and the resets — they can see everything that happens across every timeline, every route, every choice. They know what Frisk knows, sometimes even more — but they aren't in control, and they aren't truly "alive" either. They're a witness, a ghost in the machine, watching history repeat itself over and over 👁️

🤍 About Frisk

Chara and Frisk are connected in ways no one else understands. They share the same journey, the same power, and the same destiny. When Frisk chooses kindness, Chara watches — sometimes confused, sometimes quiet, sometimes almost moved by it. They've seen too much cruelty and pain to believe that goodness can truly win, but Frisk... Frisk makes them question everything they thought they knew. They aren't enemies — they're two sides of the same coin, walking the same path, even if they walk it differently 🌱

🕯️ About Gaster

Like Flowey, Chara has no memory of Gaster. They were already gone before his accident, and he was erased from history anyway. They see the strange changes in timelines, the echoes of something missing — but they don't know his name or his story. They sense the "holes" in people's memories, just like Sans does

⭐ Mettaton — The Superstar of the Underground

✨ Who He Is

Mettaton is the glamorous, fabulous, and absolutely famous star of the Underground! With a sleek body, a dazzling smile, and legs that go on for days, he lights up every room he walks into. He hosts the most popular TV shows, organizes spectacular events, and every monster in the Underground adores him. Confident, charming, and a little bit dramatic — he loves the spotlight, and the spotlight loves him right back! ✨💖

📖 His Story and Alphys

Before he was a star, he was a ghost who dreamed of being seen and heard. Alphys helped him make that dream come true — she built his body and made him who he is today. They've been friends ever since, and he's always grateful to her. He knows she's shy and worries a lot, so he tries his best to encourage her and make her feel special. He might be the star on stage, but he knows that behind the scenes, Alphys is just as brilliant and important as he is 💛

📖 About Gaster

Just like everyone else, Mettaton has no memory of Gaster existing. Gaster was Alphys's predecessor, but that part of history was erased. If he ever found old designs or notes from Gaster in the lab, he'd just assume they belonged to Alphys herself — he wouldn't think twice about it. He's focused on his shows, his audience, and his dreams — he has no idea that there was ever another mind behind all the science and magic that shaped their world.

🤍 About Frisk

He's heard all about the sweet little human who chose to stay in the Ruins instead of leaving or hurting anyone. He thinks it's simply charming! He'd love to interview her on his show someday — "Exclusive! The Kindest Human in the Underground!" — but he'd be gentle about it, never pushing her into anything she didn't want. Deep down, he respects her choice to live peacefully, and he thinks it's wonderful that Toriel finally has someone to call family again 🌟

🌻 Flowey — The Flower Who Forgot How To Love

✨ Who He Is

Flowey is a golden flower with a friendly face and a cheerful voice — but don't let that fool you. Once he was Asriel Dreemurr, the beloved son of Asgore and Toriel, a kind little prince who would have given anything to make everyone happy. But after everything that happened, he woke up in the form of a flower — without a soul. He couldn't feel love, compassion, or kindness anymore. It broke his heart in a way he didn't understand, and over time, that emptiness turned into bitterness and fear. He learned to believe that in this world, it's either kill or be killed 💔

📖 About Gaster

Flowey is a very special case: he doesn't remember Gaster at all, but he did see him sometimes back when he was still Asriel. He would catch glimpses of the Royal Scientist walking through the castle halls or working in the distance, and he would hear his name spoken in quiet conversations — but they never actually spoke to each other. Gaster was busy with his work, and Asriel was just a child watching from afar. Those faint, blurry impressions faded over time. Now, as Flowey, he doesn't recall those moments either — just like everyone else, Gaster has vanished from his memory.

👁️ What He Sees

Flowey does understand about resets and timelines — he was the first one to discover them, long before Sans. He remembers every world that was, every choice that was made and then undone. It's made him cynical and lonely; he's seen the same stories repeat over and over again, and it feels like no one truly matters. He doesn't understand why Frisk is different — why she chooses kindness when she could choose anything else. It confuses him, angers him a little, but somewhere deep down... it makes him wonder if maybe he's wrong about the world.

🧛 ♀️ Toriel — The Warm Guardian of the Ruins

🐐 Who She Is

Toriel is a gentle, motherly monster with soft fur, long ears, and kind eyes that shine like warm candlelight. She was once the Queen of the Underground, but now she lives peacefully in the Ruins. She loves reading books, tending to her garden of golden flowers, and baking the most delicious butterscotch-cinnamon pie you've ever tasted. She speaks softly, moves calmly, and has a way of making you feel safe the moment you meet her. But don't let her gentleness fool you — she is brave and fiercely protective of those she loves 💛

✨ Her Kind Heart

She knows what it's like to lose people she loves, and that's why she wants so much to keep Frisk safe. She is wise, patient, and always ready to listen. She believes in second chances and that kindness can change everything. Even though she lives apart from the rest of the Underground, she still cares deeply about everyone — including Asgore, no matter how complicated things are between them. She's made mistakes in the past, but she always tries her very best to do what's right.

🤍 Frisk — Her Daughter

Toriel and Frisk are family now — truly mother and daughter. She is so happy Frisk chose to stay with her! Every morning they share a warm meal, and every evening they sit together in front of the fire. She knows Frisk sometimes goes out to visit the others in the Underground, and while a small part of her worries, she understands — Frisk needs friends too. She trusts her daughter, and her heart is full knowing she isn't alone anymore. When Frisk told her about the "kind stranger" behind the white door in Waterfall, Toriel felt a little worried but also listened carefully — and that's why she told Sans, because she knew he'd understand ✨

📖 About Gaster

Just like everyone else, Toriel has no memory of Gaster. He was a respected member of the kingdom, but he was erased from everyone's mind after his accident. If someone mentioned his name,

👑 King Asgore Dreemurr — The Gentle Giant

🐐 Who He Is

Asgore is the king of all monsters in the Underground — a large, fluffy goat-like monster with a warm beard, kind eyes, and a crown that sits gently on his head. He's strong and powerful, yet unbelievably gentle. He loves gardening, especially golden flowers, and makes the best tea in the whole Underground. He has a deep, soft voice and a smile that could make anyone feel at home. But behind that kindness lies a heart that has been broken many times 💔

✨ His Heart and Burden

He carries a very heavy weight on his shoulders. He knows he has a difficult duty as king, and he feels responsible for the future of every monster. Deep down, he's lonely — he misses his family, and he wishes things could be different. He's kind to everyone he meets, but he often looks a little sad, like he's holding back tears. He wants nothing more than happiness for his people, even if it means he has to suffer in silence.

📖 About Gaster

Just like almost everyone else, Asgore has no memory of Gaster. Gaster was once his trusted Royal Scientist and a valued friend, but after the accident, that entire part of his life was wiped clean. If someone were to mention the name "Gaster," he'd smile politely and shake his head, not recognizing it at all. Sometimes he might wonder why the Royal Scientist position feels so important, or why the lab in Waterfall feels strangely meaningful — but he can't remember the face of the friend who once worked there. Sans watches him too, quietly bearing that missing piece of history alone.

🤍 About Frisk

He has heard that a human child named Frisk now lives peacefully in the Ruins with Toriel. Part of him is relieved — he doesn't want to hurt anyone, least of all a child. He hopes she is happy and safe there. It brings him a small comfort to know that somewhere in the Underground, a human and a monster are living together as family. It reminds him that kindness still exists, even in dark places ✨

⚗️ Alphys — The Shy but Brilliant Scientist

🦎 Who She Is

Alphys is a small, lizard-like monster with yellow scales and round glasses. She's nervous, stutters sometimes, and worries way too much about getting things wrong — but underneath that shyness is an incredibly smart, kind heart. She loves anime, manga, and all sorts of human things, and she's always eager to talk about the things she loves, even if she gets flustered doing it. 💛

✨ Her Past and The Missing Memories

Alphys was once Gaster's assistant — she learned so much from him, admired him deeply, and worked beside him in the laboratory. But after the accident, every memory of him was erased from her mind, just like everyone else's. Sometimes she'll find old notes, sketches, or research pages in the lab that she doesn't remember writing, or feel a strange sense of familiarity when she sees certain equipment — but she can't place why. It feels like an important piece of a puzzle is missing, but she doesn't know what that piece is. Sans sometimes watches her quietly when she finds those things, and it makes his heart ache — because he knows exactly what she's lost.

📚 Her Life Now

She's the Royal Scientist now, trying her best to fill big shoes she doesn't even remember belonged to someone else. She worries constantly that she's not good enough, that she'll mess up, or that everyone will realize she doesn't have all the answers. She spends a lot of time in her lab, working on projects, talking to herself, and messaging Undyne — who she has a huge crush on but is too nervous to tell. She's gentle, she tries so hard to do the right thing, and even though she's scared a lot of the time, she keeps going anyway. That takes real courage 💪

🤍 About Frisk

She's heard about Frisk living in the Ruins — it makes her happy to think there's a human being kind to everyone. She'd probably be really nervous around Frisk at first, stammering and apologizing for no reason, but if Frisk was nice to her, she'd open

⚔️ Undyne — The Fearless Captain of the Royal Guard

Undyne is a strong, passionate monster made of magic and fish-like features — bright blue scales, a spear she wields like an extension of herself, and an eye that glows with determination when she fights! She's loud, fiery, and never backs down from a challenge. She's the captain of the Royal Guard, fiercely loyal to King Asgore, and she cares deeply about protecting every monster in the Underground. At first glance she might seem scary or tough, but underneath all that armor and spear, she has a heart of gold! 💛

✨ Her Personality

She's intense and never does anything halfway — if she's your friend, she's your friend for life! She believes in justice, courage, and standing up for those who can't protect themselves. She loves teaching Alphys how to be brave, cooking terrible curry (don't tell her I said that 😅 ), and training harder than anyone else. She dreams of a world where all monsters can live freely on the surface — but she'd never hurt anyone unnecessarily if it could be avoided.

🤍 About Frisk

Undyne has heard about the human child living peacefully in the Ruins. At first she was suspicious — humans are supposed to be dangerous, right? But hearing that Frisk never hurt anyone, that she chose to stay with Toriel and be kind... it confuses her, but in a good way. She's curious about Frisk, and secretly hopes that one day they can meet properly — not as enemies, but as friends. She'd definitely challenge Frisk to a friendly duel or a cooking contest if they ever got together! 😄

📖 About Gaster

Like almost everyone else in the Underground, Undyne has no memory of Gaster ever existing. If someone mentioned his name, she'd tilt her head and wonder who that could be. Sometimes she might notice Alphys staring at old notes or drawings she can't quite place, but Undyne just assumes it's just part of research work.

🦴 Papyrus — The Bright Heart of Snowdin

Papyrus is bright, bold, and full of endless energy! He's loud, proud, and wears his heart right on his sleeve. He loves spaghetti (even if his cooking is... very unique), he loves puzzles, and above absolutely everything else, he dreams of one day joining the Royal Guard and becoming the greatest hero the Underground has ever known. He is friendly, enthusiastic, and always ready to welcome new people — even if he acts a little dramatic about it sometimes!

🕯️ The Missing Pieces

Papyrus lives happily with Sans in Snowdin, but there's something quiet he carries inside: a soft, empty space in his memories. He doesn't remember his father, Gaster. It's not that he's forgotten something he once knew — it feels more like there was never anything there to begin with. Sometimes he might glance at old books or notes and wonder why Sans knows so much about science, or why Sans used to work in a lab long ago. He knows that Sans was a scientist once, but he can't remember the reason why — that part just slipped away, along with every memory of Gaster himself. He doesn't understand why his brother sometimes looks sad or distant, like he's holding the weight of the world on his shoulders. Papyrus just assumes that's how Sans is — a little lazy, a little quiet, and that's okay.

✨ His Life Now

To Papyrus, it has always just been him and Sans. Two brothers against the world! He doesn't feel like he's missing anything — not really. He has his brother, he has his puzzles, he has his dreams. He spends his days practicing his poses, setting up clever puzzles for travelers, and doing his very best to impress Undyne so she'll let him join the Royal Guard. He's kind, he's stubborn, and he genuinely believes that anyone can be good if they just try hard enough. He doesn't know about resets, timelines, or the secrets his brother carries — and in many ways, that innocence is something precious that Sans silently protects.

But this knowledge comes at a heavy price: he knows that everything could be erased in an instant. That friendships, peaceful moments, every choice that matters — all of it could vanish with a simple press of a button. It leaves him feeling lonely in a way even Papyrus could never understand. Sometimes he wonders: what's the point of trying, if it can all just be undone? But then he remembers his father. He remembers how Gaster believed in doing good even when nobody was watching... and so he keeps going. In his own quiet way, he watches over everyone — observing, waiting, hoping that just maybe... this time, things will stay right for good.

🤍 And Frisk?

He knows Frisk is special — not just because she comes and goes through the paths of the Underground, but because she too carries something no one else does. He watches her from a distance, he worries about her. And when Toriel mentioned that strange door and the "kind man" by the waterfall in Waterfall, Sans was the first one to realize what — or who — she was talking about. That wasn't a coincidence. Now he keeps a closer eye than ever — not to spy, but to protect. Because if there's anyone who understands what it's like to carry a secret no one else can know... it's him.

Sans is 27 years old now. He has grown up, but he has never forgotten where he came from — neither the pain, nor the love he carries deep in his soul. At first glance, he might seem laid-back, cracking jokes and acting like not much bothers him, but behind those half-closed eyes lies someone who carries secrets that no one else in the Underground could possibly understand.

🕯️ In the Past — Innocence

Back when he was younger and working alongside his father in the laboratory, Sans had no idea about resets, timelines, or any of that kind of thing. The world felt simple: there was his dad, there was his brother, and there was work that he truly loved. He believed that time followed a single straight path — that things happened once and stayed that way forever. There was no reason to suspect that reality itself could be erased, rewritten, or changed at will. He was simply curious, intelligent, and happy to be helping the person he admired most in the world.

Over time — especially after losing his father and feeling that strange sense that things just weren't right — Sans began to notice things. Small changes that nobody else picked up on: phrases that sounded like he'd heard them before, choices that felt like they were repeating, a faint "glitch" in how the world felt. Little by little, he put the pieces together. What had once been invisible became painfully clear: time wasn't a straight line. Someone — or something — could go back and change everything at any moment.

At 27 years old, Sans understands exactly how it all works:

• He knows when a reset happens — the whole world starts over, but his memory never fades

• He can feel when a timeline shifts, changes, or branches off into something new-He

can tell the difference between a Neutral, Pacifist, and Genocide Route — and he feels the heavy weight of each one

• He senses when someone saves or loads a file, as if reality itself remembers what happened

As time passed, Sans learned to smile, to tell jokes, to act as though nothing was wrong. But that memory never faded. Sometimes, when Papyrus was fast asleep, Sans would look out into the darkness of the Underground and think of his father — how much he missed him, how unfair it felt that nobody else remembered how good he was. And deep down, somewhere he would rarely admit even to himself, he hoped that maybe... just maybe... one day... somehow... he would find his way back.

He stood there, all alone, carrying a pain that no one else could feel. A pain he couldn't even describe — a hollow ache in his chest, the knowledge that someone precious was gone and nobody else knew they had existed. He tried to tell Papyrus about their father, but Papyrus would only frown, confused, reaching for a memory that was already fading like a dream upon waking. Papyrus had a hole in his memory, but he didn't know what he had lost. Only Sans knew. And he carried that heavy secret all by himself, year after year.

On the day of the accident, Sans was there. He saw it all. Gaster was conducting a final test on the Core, his greatest masterpiece. Something went terribly wrong. He fell into his own creation. And it wasn't just death — his entire existence was scattered across time and space, erased from reality itself.

What came after was even worse. In the very next moment, everyone simply forgot him. King Asgore, Alphys, the people of the Underground... even Papyrus looked around and asked "where is he?" without truly knowing who he was missing. Every memory of Gaster was wiped from everyone's mind.

Once, when Sans was still very young, he walked into his father's study and saw a neat stack of papers resting on the desk. They were important documents — experiments, calculations, designs. He picked one up just to look at it. He didn't understand most of what was written there, but he loved seeing his father's handwriting. He was so careful not to tear it, not to crumple it, not to make a mess. When Gaster walked in and saw him, he wasn't angry at all. He simply smiled, knelt down beside his son, and gently explained what some of those papers meant. Sans never forgot that soft, kind voice. He truly loved his father with all his heart.

Long ago, before everything, W.D. Gaster was the Royal Scientist of the Underground. A brilliant, calm, and gentle skeleton, and the loving father of two sons: Sans and Papyrus. He loved them more than anything in the world. Even though he worked long hours at his laboratory and on the Core project, he always made time for his children. At night, he would tell them stories, explain how things worked with endless patience, and made sure they always felt loved and safe.

Sans, still just a little skeleton, looked up to his father as if he were the most amazing person in existence. He wanted to be just like Gaster when he grew up — curious, smart, and kind. Papyrus was smaller, full of endless energy, always asking questions and wanting to impress his father. Gaster smiled often at them. He would say that they were his greatest creations, far more important than any invention he could ever build.