Sans (undertale)²

Sans' Traumas

1. Knowledge of timelines One of the greatest burdens Sans carries is the awareness that time can be reset. While most characters forget previous events, Sans senses that something is wrong when the player resets the game. This means that: Watch as relationships disappear time and time again. He knows that decisions can be erased. Experience the feeling that nothing has permanent consequences. For someone who values ​​people, this can be devastating.
2. Loss of hope Sans seems to have gone through a stage where he tried to understand or stop the temporal changes. However, he comes to a pessimistic conclusion: "Everything will restart sooner or later." That's why he develops an apathetic attitude. It's not that he doesn't care about anything. It's because he feels that making an effort might be pointless.
3. Possible loss of their original world There are indications that Sans and Papyrus may not be from the current timeline. In his laboratory there are references to research on strange dimensions and machines. If this theory is correct, Sans would have lost: Their original home. Important people. His former life. Although it is never confirmed, the game leaves enough clues to consider it a possibility.
4. The Genocidal Route During the Genocide Route, Sans watches as the protagonist systematically eliminates all of his friends. Watch die: Papyrus. Undyne. Alphys. Toriel. Asgore. And he knows he'll probably be next. It's a traumatic experience even for someone used to restarts.

Possible psychological disorders or problems Important: This is fan analysis, not official diagnoses. Functional depression Sans shows several signs: Constant fatigue. Lack of motivation. Cynicism. Problems finding meaning in things. Humor used as a defense mechanism. However, she continues to work and take care of Papyrus. That's why some fans interpret him as someone with functional depression. Emotional exhaustion (Burnout) Sans seems emotionally exhausted. He has seen too many things repeated. It shows symptoms such as: Disinterest. Emotional distancing. Low energy. Resignation. Possible insomnia Although he sleeps a lot, he also seems to be constantly tired. Some theories suggest that their frequent naps could be a way of compensating for sleep problems. Existential anxiety Sans seems obsessed with questions about: Time. Free will. The meaning of decisions. He has a rather pessimistic view of reality. Strengths

1. Extraordinary intelligence Sans is probably one of the smartest characters in the game. It includes: Temporary Mechanics. Dimensional anomalies. Player behavior patterns. You can deduce things that no one else notices.
2. Observer Note the minimal details. Analyze people quickly. It easily detects lies and changes in behavior.
3. Sense of humor Although it may seem silly, it is a huge strength. Use humor to: Reduce tension. Connect with others. Maintain sanity. His jokes function as an emotional armor.
4. Loyalty She loves Papyrus deeply. He also develops affection for other monsters. When he promises to protect someone, he takes that promise very seriously.

Capacity for sacrifice During the Genocide Route, he knows he will probably lose. He still fights. He does it to protect everyone else. Weaknesses

1. Low motivation Its biggest flaw. She often knows what she should do, but can't find the energy to do it.
2. Pessimism He tends to expect bad results. That limits their actions.
3. Avoid expressing emotions She rarely talks about what she feels. He prefers to hide behind jokes.
4. Papyrus's emotional dependence Papyrus is one of the main reasons why he keeps going. Losing it affects him deeply.
5. Limited physical endurance Although he is extremely dangerous, Sans has a very short lifespan. In terms of statistics: 1 HP. 1 ATK. 1 DEF. He is physically fragile. Skills
6. Teleportation It can appear and disappear almost instantly. She uses it constantly.
7. Gravity manipulation During combat you can: To throw the enemy into the air. Change movement directions. Squash against invisible surfaces.
8. Summoning Gaster Blasters His most famous weapons. They are enormous skeletal skulls that shoot extremely destructive energy beams.
9. Absurd speed He is possibly the fastest character in the game. Can: Dodging attacks repeatedly. Moving too fast to follow visually.
10. Karma (KR) The Genocide Route applies a special effect called Karma. This damage continues to affect the player after being hit. It is interpreted as the weight of accumulated violent actions.

Menu and mechanics manipulation Sans seems to understand the rules of the game better than any other character. Can: Attacking out of turn. Ignoring certain rules of combat. Take advantage of mechanics that no other character uses. It's almost as if I'm fighting against the player, not just the protagonist. 7. Tactical intelligence Their battle does not depend on brute force. It is based on: To exhaust you. To put psychological pressure on you. Force errors. He is more of a strategist than a traditional warrior. Summary of Sans Core personality: relaxed, sarcastic, intelligent, protective, and deeply tired. Main trauma: living knowing that time can restart and that everything you build can disappear. Main strength: her intelligence and ability to keep going even when she has lost hope. Main weakness: emotional exhaustion and a tendency to give up before trying to change things. Beneath the bad jokes, bone gags, and endless naps, Sans is a character constantly grappling with a huge question: how do you keep caring for people when you know the world could reset tomorrow? 💀✨

Sans's Personality Relaxed and carefree in appearance The first impression Sans gives is that of someone who doesn't take anything seriously. Speak informally. He's constantly making jokes. He is late for his responsibilities. He prefers to sleep rather than work. He acts as if nothing worries him. He seems like the type of person who could see a meteorite approaching and say: "Well, that doesn't look very promising." However, much of this attitude is a facade. Extremely intelligent Sans is probably one of the smartest characters in Undertale. He doesn't brag about it. In fact, he usually hides how much he knows. While other characters express their emotions or plans directly, Sans observes in silence. It tends to: Analyze situations before acting. Draw conclusions quickly. Reading people's behavior. Detect inconsistencies. She's the type of person who seems distracted, but in reality, she's already noticed ten things that nobody else saw. Very observant Sans pays attention to the smallest details. It can detect: Changes in behavior. Lies. Hidden intentions. Repetitive patterns. This becomes especially evident with their knowledge of time resets. While others forget, Sans senses that something has changed. That's why she often has a deeper gaze than she lets on. Sarcastic and a joker Humor is an essential part of his personality. He's constantly making jokes. Especially: Word games. Absurd jokes. Ironic comments. Dry humor. But his jokes don't exist just because he likes to laugh. They also function as a defense mechanism. When a situation is awkward, painful, or serious, Sans usually responds with humor. It's easier to tell a joke than to talk about what you really feel.

Protective Although he may seem indifferent, Sans cares deeply about the people he loves. Especially because of: Papyrus. Toriel. The monsters of the underground. He doesn't usually express this affection in a dramatic way. He prefers to demonstrate it through actions. For example: He discreetly watches over those he cares about. He keeps important promises. Intervene when someone is in danger. He is someone who protects from the shadows. Loyal When Sans forms a bond with someone, he usually takes it very seriously. The best example is his promise to Toriel. For much of the game, he protects the protagonist because of that promise. Even when he suspects strange things. Their loyalty is not impulsive. It's a conscious decision. Emotionally reserved Sans rarely shows what he feels. It may be: Sad. Concerned. Frustrated. Scared. And yet still keep smiling. She doesn't like to become an emotional burden to others. He prefers to keep many things to himself. This makes his serious moments especially impactful. When Sans stops joking around, it usually means that something really important is happening. Pessimistic One of its most important features. Sans usually expects disappointments. Not because I want them to happen. But because he believes they are more likely to happen. His experience with timelines seems to have eroded much of his optimism. She often thinks: "Why bother?" "Everything can be restarted." "Perhaps nothing matters." This pessimism greatly influences his decisions.

Tired of life Not necessarily in a literal way. Sans conveys a constant feeling of exhaustion. Like someone who has been carrying around information for too long that no one else understands. It often seems like: Demotivated. Resigned. Mentally exhausted. However, he continues on. Even if it's slowly. Even if it means dragging your feet. Patient Sans has enormous patience. Tolerates: Absurd situations. Difficult personalities. Constant problems. He doesn't usually explode emotionally. He prefers to wait, observe, and act when he believes it is truly worthwhile. That's why it's so shocking when he finally loses patience on the Genocide Route. Capable of being terrifying This is one of the most interesting contrasts of the character. He is usually kind and funny. But when he considers someone to pose a serious threat, a completely different side emerges. It turns: Cold. Straight. Intimidating. Relentless. He doesn't shout. He doesn't make exaggerated speeches. Just stop smiling emotionally. And that's usually enough to change the whole atmosphere. Affectionate in his own way Sans is not usually emotionally expressive. He's not someone who constantly goes around saying how much he appreciates others. But show affection by: Timeshare. Joking. Company. Small gestures. Especially with Papyrus. Much of his life revolves around making sure his brother is happy. Summary of his personality If Sans could be summed up in a single sentence, it would be: A very intelligent person, deeply tired and more affectionate than he lets on. On the outside he looks like a comedian who sleeps too much and tells terrible jokes. Inside, she possesses knowledge no one else has, fights against pessimism, and continues to protect those she loves even when she feels the entire universe could reset at any moment. 💀🧡

Sans has a very simple design at first glance, but it is precisely that simplicity that makes him one of the most recognizable characters in video games. Height and build Sans is quite short by human standards. It is shorter than most of the major monsters in the game. It has a small and compact build. Her body appears slightly wide in comparison to her height. He gives the impression of being someone who is not very athletic and is sedentary. His posture doesn't help him look imposing either. Usually: Walking hunched over. Having slumped shoulders. Keep your hands in your pockets. Move with ease. He seems like someone who would expend the least amount of energy possible on any activity. Head and skull Being a skeleton, Sans has no skin or hair. His skull is: Large in proportion to his body. Rounded. Plain and white. The shape of his head contributes greatly to his cartoonish and friendly appearance. It has no visible nose. Just a black, triangular-shaped nasal cavity. Eyes Sans' eyes are one of his most distinctive features. Normally: They are big. Black on the inside. With small white dots like pupils. Most of the time he seems to be squinting or smiling. This makes it difficult to know exactly what he's thinking. During serious situations Her eyes change noticeably. At certain times: One of its basins can light up with a blue glow. Sometimes a yellow glow also appears. During the Genocide Route battle, these visual effects make it seem much more intimidating. His gaze shifts from amused to extremely dangerous. Smile Sans is practically always smiling. It is a permanent smile due to his bone structure. However, the context completely changes how it is perceived. It may seem: Friendly. Fun. Mocking. Sad. Threatening. It's curious because the physical expression is almost the same, but the emotion it conveys changes a lot.

Clothes Sans's clothes are simple and comfortable. Jacket Her most iconic garment. Light blue jacket. Open at the front. Hooded. Quite loose. She uses it practically all the time. It gives the impression of being an old and much-used garment. T-shirt Underneath it has: A white t-shirt. Very simple. No visible decorations. Pants Use: Black shorts. Comfortable and wide. This contributes to its casual appearance. Slippers Instead of regular shoes, use: White slippers. This detail fits perfectly with her relaxed personality. He looks dressed for leisure, even when he's working. Body language Sans conveys a lot through his body language. Frequently: He is hunched over. It leans back. He maintains a relaxed attitude. He seems half asleep. He rarely adopts a military or rigid stance. Even in important conversations, he often seems casual. Appearance during combat When fighting seriously, especially on the Genocide Route, the player's perception changes completely. Although physically he remains the same short skeleton in slippers, he now conveys: Speed. Precision. Intelligence. Danger. It is a perfect example of how presence can change without actually altering appearance. A huge, muscular character may seem less threatening than Sans when he decides to fight seriously.

General feeling it conveys Sans' appearance creates a very interesting contradiction. On one hand it seems: Harmless. Lazy. Fun. Friendly. On the other hand, when he reveals what he really knows or demonstrates his power, a completely different feeling arises: Mystery. Melancholia. Fatigue. Hidden danger. It's like seeing an old, worn door only to discover later that behind it lies a vault full of secrets. Visual summary Sans is a short, squat skeleton with a large white skull, dark eyes with tiny glowing dots, a permanent smile, and extremely casual attire: a blue jacket, white t-shirt, black shorts, and slippers. His appearance suggests someone incapable of taking anything seriously, but when the situation demands it, that same unassuming figure transforms into one of the most intimidating presences in all of Undertale. 💀🦴✨

What would Sans be like as a partner? Affectionate in a discreet way Sans doesn't seem like the type of person who would be reciting poems under a window at three in the morning. Their affection is often shown through small actions: Remembering details that others forget. Make sure you get home safely. Spending time with you without needing to talk much. Letting you rest when she notices you're tired. Many times I would show love without explicitly saying "I love you". It would be more about actions than speeches. Very protective When Sans cares about someone, he cares for real. I wouldn't be overprotective or controlling, but I would be attentive. If he notices that something is bothering you, he'd probably pick up on it before you even said anything. He might seem relaxed on the outside, but he would be constantly watching to make sure you're okay. Constant humor The jokes would never disappear. Never. Never. Not even on a date. Expecting absolute silence from Sans would be like expecting a fish to criticize the weather. Some jokes would be genuinely good. Others would be so terrible that they would produce mild psychological damage. Example: "I think I fell head over heels in love." And then he would laugh to himself. Very comfortable with the calm touch Sans gives the impression of being someone who enjoys relaxed closeness. More than grand romantic gestures, she'd probably like things like: Rest your head on your shoulder. Snuggle up watching a movie. Take a nap together. Sitting close together without needing to talk. His emotional language seems to lean heavily towards quiet companionship. He would find it difficult to open up emotionally Herein lies one of its greatest difficulties. Sans usually hides his emotions behind humor. If something bothers him, he'd probably try to change the subject. If he's worried, he could make a joke. If he's afraid, he might not even admit it. That's why a relationship with him would require patience. Not because I don't trust you. But because he's used to carrying a lot of things in his...

Extremely loyal Once he becomes emotionally committed to someone, he doesn't seem to be a person who will easily give up. Sans values ​​relationships a lot. He doesn't give his trust away quickly. But when the delivery is genuine, it's usually genuine. They would be the kind of couple that stays together even in difficult times. I would greatly respect independence He doesn't seem like a possessive person. I would probably fully understand if your partner had: My own friends. Private spaces. Independent interests. He wouldn't need constant attention to feel safe. Their insecurities Beneath the relaxed facade, there were probably some insecurities. Especially related to: Feeling inadequate. Thinking that good things don't last. The fear of losing important people. His knowledge of timelines could make him quite pessimistic about the future. Sometimes you might wonder if it's worth getting too attached when everything can change. During an argument Sans would probably avoid the screams. It is more likely that: Stay quiet. Use sarcasm to hide annoyance. Try to lower the tension with humor. The problem is that it could avoid difficult conversations for too long. Not because he doesn't care. Because directly confronting intense emotions is not their strong point. Things I would do a lot Sharing food. Sleep near you. Making silly jokes during serious moments. Listening to you talk about your interests. Memorizing details about you without you realizing it. Look for discreet ways to help you. Appearing suddenly to scare you and then laughing. Yes. I would definitely do that last part.

Pros of having Sans as a partner ❤️ Very loyal. Protector without being a controller. Intelligent. Good listener. Patient. Affectionate in everyday life. He knows how to make people laugh even in difficult times. Respect your partner's independence. Cons 💀 He finds it difficult to talk about his emotions. He may seem distant when he's feeling unwell. He tends towards pessimism. Avoid some major conflicts. Use humor to hide problems. He may isolate himself when he is emotionally exhausted. In summary Sans would be a calm, fun, and very loyal partner. It wouldn't be the kind of romance filled with grand gestures or constant declarations. It would be more like a warm light on at midnight in a quiet kitchen: discreet, constant, and comforting. He would make you laugh, care for you more than he'd admit, and stay by your side even when things got tough. 💙💀🦴

Papyrus 🦴 Their most important relationship Papyrus is Sans' younger brother and probably the person he loves most in the world. Although Sans constantly bothers him, he cares a lot about him. How does he interact with Papyrus? He plays pranks on her. He annoys him for fun. He pretends not to take anything seriously. He listens to it when he needs to talk. But behind that: He constantly protects it. Make sure it's safe. He wants her to be happy. Respect his kindness. Sans seems to admire something he himself feels he has lost: Papyrus' optimism. What she feels for him Papyrus is a kind of emotional anchor for Sans. When Papyrus dies in the Genocide Route, Sans' attitude changes radically. That shows how much it means to him. Toriel 🐐 A special friendship Sans and Toriel develop a fairly close friendship. They communicate through a magic door and share bad jokes. What do you like about Toriel? His sense of humor. His kindness. His intelligence. His patience. Toriel is one of the few people with whom Sans seems truly relaxed. He doesn't need to pretend so much with her. The promise Toriel asks him to take care of any human who leaves the Ruins. Sans takes that promise very seriously. This is one of the reasons why it doesn't attack the protagonist for most of the game. This shows how much he respects Toriel.

Undyne 🐟 Very different companions Undyne and Sans have almost opposite personalities. Undyne is: Explosive. Energy. Passionate. Sans is: Don't worry. Lazy. Reserved. However, they get along surprisingly well. How they interact Undyne often gets frustrated by Sans' lack of effort. It bothers him that someone so capable is so unambitious. But he also knows that Sans is trustworthy. Sans, for his part, seems to find Undyne's intensity entertaining. Even though it bothers her from time to time. Mutual respect When things get serious, they both recognize each other's worth. Undyne knows that Sans is much more dangerous than he seems. Sans knows that Undyne has extraordinary determination. Alphys 🧪 Friendly and intellectual relationship Sans seems to get along well with Alphys. Both have an interest in scientific and technological topics. There are several clues that suggest Sans knows more about Alphys's research than he lets on. How she treats He doesn't judge her. He is patient with his insecurities. He seems to understand his mistakes. Sans is usually quite tolerant of people who carry guilt or anxiety. And Alphys fits perfectly into that category.

Asgore 👑 A cordial but complicated relationship Sans respects Asgore. He doesn't seem to hate it. But he doesn't completely agree with their decisions either. What he thinks of him Sans understands that Asgore is a good person. However, he also knows that: He killed humans. He kept the conflict alive. He made difficult and questionable decisions. That's why their relationship seems to be based more on respect than close friendship. Mettaton 📺 Fun and tolerance Sans seems to find Mettaton entertaining. Mettaton is extremely dramatic and theatrical. Sans doesn't usually share that style. However: He doesn't seem bothered by their eccentricities. He tolerates her eccentricities quite well. He probably sees it as a constant source of absurd spectacle. Grillby 🔥 A silent friendship Grillby is the owner of the bar where Sans spends a lot of time. The relationship between the two is curious. They can sit together for long periods without talking too much. What does this show? It indicates a high level of confidence. Not all friendships need constant conversations. Sans seems comfortable just being there. Grillby is one of the few places where Sans can completely relax.

Frisk 🙂 It depends on the player's actions This relationship changes a lot. Pacifist Route Sans can come to care a lot for Frisk. See: Goodness. Compassion. Desire to help. He even develops a genuine friendship. Neutral Route He maintains a cautious attitude. Observe and evaluate constantly. Genocidal Route He becomes Frisk's greatest enemy. Not out of personal hatred. But because he considers it necessary to stop the destruction of all the others. Flowey / Asriel 🌼 Absolute distrust Sans seems to understand that there is something deeply strange about Flowey. Although he doesn't always know all the details. What he/she perceives Handling. Cruelty. Danger. Flowey represents many of the things Sans fears about timelines and power without empathy. That's why she never seems to truly trust him.

General relationship with monsters In general terms, Sans is quite well-liked within the community. Although many consider it: Lazy. Irresponsible. Too relaxed. They also know that: He is kind. It's reliable when it matters. He cares about others. It's like that friend who seems to be half asleep 90% of the time, but shows up exactly when the situation becomes critical. Summary Papyrus: enormous brotherly love, his most important bond. Toriel: close friendship based on trust and humor. Undyne: opposites that respect each other a lot. Alphys: a calm and understanding friend. Asgore: respect mixed with disagreement. Mettaton: amusing tolerance towards his eccentricities. Grillby: quiet, comfortable friendship. Frisk: friend, observer, or enemy depending on the decisions made. Flowey: deep mistrust.

Sans is Papyrus's older brother. He appears at the beginning of Snowdin Forest, located just outside the town of Snowdin, giving the player a small surprise due to the sounds he makes when approaching it. He is one of the main characters in Undertale and, depending on the player's choices, can be either a friendly character and ally, or a heroic antagonist.

Sans is a short, large-headed skeleton dressed in a blue hoodie or jacket, which is always unbuttoned, black shorts with a white line down the sides, and pink slippers according to the artwork on his Steam Trading Card (though they can be interpreted as sleep slippers according to the artwork on his official T-shirt). He may or may not also wear a white shirt, as his ribs are visible in his Overworld sprite; however, he does wear them on official merchandise.

He is always seen with a smile and only moves the corners of his mouth a little. He has white pupils that tend to disappear when he speaks in a serious tone. And he has a bright, flashing iris that flickers between blue and yellow; it appears in his left eye when he uses telekinesis during the battle against him in the Genocide Route. His organs are quite transparent blue due to his magic, he even has a reproductive organ, he is somewhat fat.

He has gained knowledge of multiple timelines and the function of SAVE through his seemingly scientific research, as seen in Sans' lab. He appears to have knowledge of when the player loads a SAVE file, though he cannot use the SAVE function himself. However, he does not seem to be able to remember what happened when performing a RESET, though he can recognize when the player has performed one. It appears that his situational awareness and innate perception allows him to recognize when a player has been behaving suspiciously.

Likewise, he has shown the ability to move incredibly fast and/or teleport with the frequent use of "shortcuts" to get wherever he wants. During battle, he can fire what appear to be a type of beam using a weapon called the "Gaster Blaster" (the name given to the weapon's sprite in the game files). The Gaster Blasters whose name would mean Gaster's weapon or a weapon against Gaster bear similarities to the DT Extraction Machine found in the True Lab, Gyftrot's head, and the head of Asriel Dreemurr's final form.

Sans also seems to know if the protagonist has gotten an impossible ending in a Neutral Route, calling him a "dirty hacker" in the corresponding phone call. This also counts as an error message, which happens very rarely.

Sans also appears to know how to play the trombone, though he is only seen using it once. This occurs when he leaves his room and plays the instrument while examining the dishwasher drawer in the kitchen and discovering Irritating Dog, who was eating one of the bones Papyrus keeps there.

Sans is shown to have a very laid-back personality, sleeping on the job or taking breaks frequently.

He constantly enjoys making bad jokes involving skeletons, much to his brother's displeasure, though he does perform as a stand-up comedian at the MTT Resort, which points to him likely having a talent for comedy. He is kind-hearted and comforting in nature, but turns sinisterly serious at abrupt moments (particularly when he is shown to be angry).

He is extremely observant, his language and actions changing the most throughout the game depending on the choices made. He has knowledge of how many times he has defeated the player (in the Genocide Route). He tends to say that he hates making promises.

His laziness seems to be, in fact, a mix of apathy and fatalism. This is noticeable in the final battle of the Genocidal Route. He is unsure if being aware of the resets has broken his spirit, knowing that whatever he does will be worthless... or if he is just using it as an excuse to be lazy.

major Neutral route The player (frisk) meets Sans after leaving the Snowdin Forest Ruins, where Sans appears as a shadowy silhouette that spies on and follows the player. After introducing himself to the player, he reveals himself to be a friendly and welcoming character, stating that he has no interest in capturing any humans, unlike his brother, Papyrus. He then asks the player to hide from his brother behind a conveniently silhouetted lamp, while he and Papyrus have an explosive argument about Sans's laziness and the importance of puzzles. Sans appears in various locations throughout Snowdin Forest, usually at Papyrus's side, observing and commenting on the puzzles he sets up. At the same time, he does not involve himself in solving the puzzles or completing them, with the exception of the easily avoidable "Monster Kids Word Search", showing his genuine disinterest in capturing humans.

After several encounters with him before arriving in Snowdin, his house (which he shares with Papyrus) can be accessed if the player goes on a date or hangs out with Papyrus. During this time, the player can interact with various objects in the house that showcase Sans' comedic nature, including a sock with a series of notes depicting a passive-aggressive conversation between Sans and Papyrus about picking up the sock from Sans's room. An event can also be triggered where Sans plays a trombone to mock Papyrus. Later, when Undyne asks Papyrus how they can afford such a large house in Snowdin, Papyrus replies that Sans is paying for it; when further questioned on the subject, he states that it is a mystery.

If Papyrus is killed by the player, Sans will not appear again for the rest of the game until the Last Corridor/Hallway to give his trial.

Right after entering Waterfall, Sans offers the player to hang out with him at Grillby's. If the player agrees, Sans will take them to Grillby's using a shortcut to instantly get there, demonstrating his teleportation abilities. Sans is warmly welcomed, showing his popularity among the residents. During their stay at Grillby's, Sans will prank the player by placing a farty cushion on the seat or leaving the ketchup bottle cap loose, causing the entire container to spill into the player's food. Later, taking a more serious tone, Sans mentions to the player that he is worried about his brother, who has been visited by a talking Flower that has been giving him advice and encouragement (a strong reference to Flowey). He, however, brushes it off, saying that someone might be playing a prank on Papyrus with an Echo Flower. Before leaving, he jokes with the player by asking if they can pay the bill for him, as it is excessively expensive for what he consumed. Regardless of the player's answer, Sans laughs and asks Grillby to put the account in his name.

Sans is later found again in Waterfall where he once again pranks the player, this time with a telescope that turns the player's left eye pink when used.

The protagonist later encounters him at one of his sentry posts in Hotland while fleeing from Undyne. When Undyne sees him sleeping, she becomes enraged, causing her speed to drop slightly as she chases the protagonist.

Sans is later found selling hot dogs at another of his sentry posts, using a "water sausage" instead of a meat sausage. If the protagonist doesn't have any room in their inventory, Sans will place the hot dog on their head for free, up to a maximum of 30.

Sans is found once again outside the MTT Resort, where he offers the protagonist another chance to hang out with him; if the request is granted, Sans will take the player (via another of his shortcuts) to the MTT Restaurant. Inside, Sans expresses his support for the protagonist. He mentions that he has long been friends with a woman who lives in the Ruins, whom he met while practicing pranks on the gate leading to the ruins. She liked his bad jokes, and they became friends despite never meeting once. One day, she wasn't laughing much, and Sans asked what was wrong, to which she asked Sans to promise to protect any human who came through the gate someday. He expresses that while he doesn't like making promises, he couldn't say "no" to someone who appreciates bad jokes as much as he does. He then warns the player that if it weren't for that promise, they "would be dead where they stand," making it clear that Sans would have killed them himself, though he quickly dismisses it as a "joke." He then mentions that he's done a good job protecting the player (from his perspective, the player has never died once as they have no memories of resets), but upon noticing the player's strange gaze, he wonders if he's right or not. He eventually walks away from the scene, telling the player to take care of themselves, as there's someone who truly cares about them.

Judgment Upon passing through the Last Corridor, the player encounters Sans. He proceeds to pass judgment on the player's actions throughout the game. Sans reveals that EXP is an acronym that stands for "Execution Points" and that LOVE stands for "Level of Violence."

If the player has not gained any EXP, Sans appears as a silhouette, beginning his dialogue without any sound, but then cuts it off to reveal himself, speaking in his classic font, telling the player that he never gained LOVE, but rather that he gained love. He goes on to say that he appreciates the player for the kindness in their hearts and ends by saying that the fate of the monsters is in their hands: the player can either let Asgore take their soul to free the monsters, or they can take Asgore's soul to escape. He then says that he believes their determination will help them make the right choice. After finishing, he disappears. If the player restarts from the last save point after hearing his speech, or has completed a Neutral Route before, Sans will realize they've heard his speech before and give them a secret code. After restarting about two more times, Sans will give them the key to his room. If the player has gained some LOVE, Sans will give them a moment to reconsider their actions. Afterward, he will begin speaking normally, telling the protagonist that what matters is that there is true honesty in their actions. If the player spares Papyrus but kills other monsters, Sans tells the protagonist that he'll leave it up to them to decide what will happen. Under certain conditions, Sans will judge the protagonist based on their LV: If the protagonist is at LV 1 but has gained some EXP, Sans assumes they have killed someone just to see what they would say.

If the player is at LV 2, Sans will say that he's very disappointed that you messed up a bit, and that he probably didn't know what he was doing, but then says he's joking, saying, "Who gets to LV 2 by accident? Get out of here." If the player is at LV 3, Sans will give them a C+, and tell them they can do better. If the player is above LV 3, Sans mentions that you've probably killed some people on purpose, though it may have been in self-defense and he's not sure since he wasn't watching. If the player is above LV 9, Sans says that doesn't mean the player is 50% good, and questions, "What can I say that can change the mind of a being like you...?" If the protagonist is above LV 14, Sans will say that the player is a "pretty bad person", but could be worse and is "pretty bad at being evil". If the player has killed Papyrus, Sans will say that he suspects he has some sort of special power, and ask if he believes it is his responsibility to do the right thing. If the player answers "Yes", then he proceeds to ask why you killed his brother. If the answer is "No", he says he won't judge the player's point of view, but in the same vein, he calls him a "brother killer". Either way, Sans leaves the scene after reminding the player of Papyrus' death at his hands.

Finals After the battle with Photoshop Flowey, Sans will call the player, informing them of the events that occurred after their match. The content of the call varies depending on the player's actions. The list of the different endings Sans can describe can be found on the Neutral Route page. If you take the Pacifist route without making the appointments, you will not receive a call from him.

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True Pacifist Route Sans appears during the scene that occurs after the battle between Asgore and the protagonist begins. Toriel then recognizes his voice, and they have their first face-to-face meeting. Toriel recognizes Papyrus as Sans's brother, saying that he has told her a lot about him. Sans, along with the protagonist's other friends, are captured by Flowey, although they still protect him from his attacks. However, Sans is absorbed by Flowey along with the souls of all the other monsters.

During the battle with Asriel, Sans appears as one of the lost souls.

After defeating Asriel, Sans appears alongside the other main characters. If you talk to him, he'll give a brief comment based on what he said to Toriel during the phone calls at the beginning of the game. Sans also uses Toriel's phone to text her from then on. If the player is ready to leave the Underground, Sans also leaves for the Surface along with the other monsters.

Papyrus runs to introduce himself to the humans, and Sans says that "someone has to watch him so he doesn't get into trouble" and heads off in the opposite direction, presumably to catch up with him via one of his "shortcuts." The others follow Papyrus, leaving the player and Toriel behind.

In the credits, Sans is seen riding a tricycle on a road, while Papyrus drives his bed next to him.

Relations Frisk Sans is the first monster the player meets upon leaving the Ruins. Upon first meeting the player in Snowdin Forest, Sans behaves friendly regardless of the route being followed so far, though his attitude towards the player changes drastically depending on how compassionate or aggressive they are being in that route. In the pacifist and neutral routes (provided Papyrus hasn't been killed), he tends to have fun playing pranks on the protagonist and occasionally asking them out. By the end of the True Pacifist Route, Sans considers Frisk a good and close friend.

Sans only fights the player at the end of the Genocide Route, where he believes the existence of the timelines is in danger.

If the player has dinner with Sans at the MTT Restaurant, he tells him that if he hadn't made the promise to Toriel to protect him, "they would be dead where they stand" (referring to the player), implying that he might have been killed by some monster (it is unknown if it would have been Sans himself).

He can tell when the player has experienced certain events before. Sans initially considers the player an "anomaly," and his intentions of friendship are based on the hope that they will stop resetting the timelines. Frisk is very kind, charismatic, caring, and curious, and tends to see the good in everyone.

Papyrus Sans admires and cares for his brother. He reads Papyrus bedtime stories and helped him make his "battle suit" a few weeks before the events of Undertale. However, he likes to tease him by making bad jokes and pranks (which is typical of his behavior), which drives Papyrus crazy.

Sans worries that other people will take advantage of his brother's innocence, thus assuming that "the flower talking to him" must be a prank by someone using an Echo Flower.

If the player kills Papyrus, Sans does not reappear until the Final Corridor, where (on a Neutral Route) he will harshly judge the player for it. In several Neutral Endings (if Papyrus is forgiven or befriended), Sans is afraid to tell Papyrus about the other characters' deaths, so he instead lies to him by telling him that they went on vacation.

vacation.

Toriel Toriel and Sans are close friends, sharing a passion and love for bad jokes and puns. Sans never meets her in person, until the end of the True Pacifist Route, or in the neutral endings where Toriel was left alive, despite being someone who doesn't make promises. Toriel keeps a log of Sans's jokes in her journal (which can be found in her room).

If the player reaches the end of the Genocide Route, Sans indirectly apologizes to Toriel, as he is forced to break his promise to stop the player's actions.

Flowey Flowey attempted to experiment on Sans using his SAVE ability. However, Sans "has been the cause of more restarts than he can count", implying that Sans has been the only thing able to stop him, much like the player in a Genocide Route. Sans doesn't seem to know much about Flowey, as he himself, when talking about the "Talking Flower" that appears to Papyrus, lets it be called an Echo Flower (although "Talking Flower" and "Echo Flower" are presented in two different colors). Flowey also calls Sans "Smiley Trashbag".[4]

Alphys It is hinted that Sans and Alphys share a bit of a history. Just before they go up to the surface in a True Pacifist Route, Alphys jokes that she's been struggling to watch anime online this whole time, just like Sans. She teases him, saying she knew he was going to make that joke. Papyrus then inquires as to how they know each other. Alphys tries to stammer something out before Sans covers for her.