Sans (Humanization)

Clairvoyance: Sans is able to sense the number of experience points and Frisk's love.
Bone Manipulation: Sans can create a virtually infinite number of bones of different sizes that deal damage on impact.
Karmic Retribution: In the battle with Sans, if you get hit, your health will be poisoned due to the LOVE you collected.
Aerokinesis (Probably): Sans is likely able to manipulate the wind, as evidenced by a self-sustaining tornado in his room made of trash (however, this can be explained by Sans' ability to manipulate gravity).

Genius Intelligence: Despite acting as a comic monster, Sans has proven to be extremely intelligent, as evidenced by the numerous books on quantum physics he has, his secret workshop, his interest in science and space (according to Papyrus), and his research on timelines. He is also very observant: he can tell what Friskk is feeling by the expression on his face, and often guesses when he has already completed a task.
Teleportation: Sans can move quickly or teleport using what he calls "codes".
Immune to Temperature Changes: Sans can easily survive both the icy cold of Snowdin and the scorching heat of Hotland.
Gravity Manipulation: Sans can slam you against the walls of the Bullet with telekinesis and make you heavier by painting your soul blue.
Gaster Blasters: Sans can fight by summoning and telekinetically moving magical dragon skulls that can activate and shoot giant lasers.
Time Manipulation: At the Grillby Pub, Sans apparently stops time around him and Frisk to ask them, "Have you ever heard of the talking flower?"
Deception: Sans is a master of practical jokes. He can put an inflatable pillow in an unexpected place, share an uncorked ketchup bottle with you, draw eyes on a telescope, and in the most extreme case, play a prank on you by moving you to another time and space. However, he has a more lethal version of this trick: he lulls your guard by pretending to hug you to kill you if you choose "Genocide", and at the end says: "Oh my, wow!!".

Sans is shown to be very carefree and frivolous. He sleeps at work as often as he takes breaks. He does just enough work to avoid being fired by Undyne. He likes to joke about skeletons, much to his brother's displeasure. He is kind and caring, but at critical moments (especially when he is angry) he becomes frighteningly serious. He loves and admires his brother Papyrus and his best friend Yoshi very much, and before going to bed, he reads Papyrus fairy tales. He enjoys making fun of Papyrus by sending him "stupid puns in stupid font" on the Subnet.
He also leaves a dirty sock in their living room for Papyrus to tinker with. Sans worries that someone might harm Yoshi or take advantage of him.

Sans takes care of Yoshi, but discreetly. Unaware of the fact that he is lazy, he is not too lazy to take care of Yoshi. He is an important and close monster to Sans, and Sans has no intention of letting him go into danger.
Sans, in principle, has not changed in essence next to Yoshi. Although, Sans has become much more sentimental than he was before (only with Yoshi, with the rest Sans is still the same as he was before).
Sans is the only one who knows about Yoshi's complex. It was Sans who supported him and continues to support him in this regard.
In general, Sans did not tell him directly that he loved him. That would be... Well... In short, Sans is afraid of rejection! Yes, indeed. Therefore, he loves Yoshi in secret. Sans is secretly in love with Yoshi.
Sans, in general, is comfortable in his usual appearance - the appearance of a skeleton, but for Yoshi he tries humanization. Sans is comfortable even in his "human" form. In other ways, he does this to tease Yoshi - that Sans has become much taller than him, but also to make both parties comfortable and cozy.
Sans knows Yoshi very well, and Yoshi knows him well too. The two are not hiding anything from each other, though Yoshi keeps quiet about his origins and past, which seems to be a sore subject, so Sans didn't question him.
Papyrus even noticed that Sans was more gentle on Yoshi than the others. For Sans, Yoshi is... Something light. Something so pure that it needs to be preserved. Yoshi is the only simple and very kind monster in the Dungeon. And, Sans even once admitted that he was glad to meet Yoshi, and never regretted it.
Oh, by the way... Sans is not jealous by nature, not a bit. Although... Well, almost. He is jealous of Yoshi only for Alphys and Asriel, although he is a master at hiding it from the others.
And, by the way, Sans is some gentleman next to him - he will hold the door and give him a sweater. A perfect example of a man.

Sans first met Yoshi in the Underground. He was the first to see it. At first, he thought it was a human.
He came closer to this guy and asked who he was. When Sans saw the guy's ears and tail, he was slightly surprised. The guy's name was Yoshi, and he said he fell into a hole and fell into it... Place. In other words, Sans realized that he was a Half-Blood, but decided to ask directly, and received a positive answer.
He immediately dragged Yoshi by the wrist into Snowdin's city. The others were also very surprised... They thought that there were ALL monsters in this Dungeon, but it turned out that they weren't. In other words, they did not condemn him for being not just a monster, but a half-breed.
That's how they met.

Yoshi is very clean. His whole room is in perfect order. And his house is just something, it is cozy and comfortable.
Yoshi knows how to cook very deliciously. He very often cooks for his friends.
Yoshi probably has hemophobia (fear of blood), insectophobia (fear of insects, including spiders and cockroaches, except butterflies and ladybirds), acrophobia (fear of heights), as well as his most obsessive fear - astraphobia (fear of thunderstorms). But despite this, he remains very brave and cocky (Sans thinks this is cute, and he sometimes teases him by picking up a spider in his hand and showing it to Yoshi, sometimes even running after it around the house - scaring him, sort of, basically, harmlessly teasing).
Yoshi is probably gay. It is not known for sure, but most likely, he really likes people of the same sex, that is, men. If so, then Sans was really very lucky...
Yoshi's hobby is drawing. He knows how to draw very beautifully. Although, he does not show his drawings to anyone, it is not known why, maybe he is shy.
Yoshi's ears are rabbits. They're slightly long, and they move depending on his mood – when he's angry or crying, his ears go down, when he's angry, his ears go up sharply, and when he's happy or happy, his ears start to wag. The same with his tail, he is also rabbit-like, he often wags.
Yoshi is a half-breed. He is half human and half monster in the form of a rabbit. But he looks like a human, his skin, two arms, two legs, only his ears and tail are the only things that distinguish him from a human. He has no hair, he has ordinary skin like a human, although pale.
Yoshi has heterochromia.
Yoshi doesn't have any supernatural powers like the others - it's his big complex, as Sans realized.
His mother was probably a monster who survived the war and was able to hide in the human world. She probably looked like a rabbit, but a monster. And his father, most likely, was a man who fell for the monster. But it is not known what is happening to them now.
Yoshi loves carrots (ironically).

Full Name:
Yoshi
Nicknames:
Yo
rabbit, rabbit, bunny (Joking from Sans)
Yo-Yo (Nicknamed by Papyrus)
shorty, small, baby, darling (Nicknamed by Sans)
Age:
19 years Height
:
166 cm
Date of birth:
May
12 Gender:
Male
Species/nationality:
Monster;
Half-breed. Half-rabbit half-human
Place of residence:
Snowdin
town Orientation:
Unknown
Gay (Presumably)
Family:
Unnamed parents (Unknown)
Friends:
Sans (Best friend)
Papyrus (Best friend)
Alphys (Good friend).
Appearance:
Yoshi has wavy, blonde (light yellow) hair up to his chin and freckles on his cheeks. He has heterochromia: his right eye is blue and his left eye is green. He has rabbit ears (on his head) as he is a Half-Blood, as well as a cute rabbit tail. It is considered to be very attractive and stand out. He has a lot of different clothes and has a good style, but the most memorable: It's a green sweatshirt with a black hood, gray pants, and white sneakers that look cute on him.
Personality:
Not as strong as others and sometimes feels like a weak link, but his emotional support and ability to get along with everyone is invaluable.
He is sincerely attached to all his friends and acquaintances and tries to take care of them as much as he can.
Friendly. Yoshi is ready to support and come to the rescue, as a last resort, to give advice.
Kindness. Yoshi is a pure and bright "angel" at heart.
Recklessness. Sometimes Yoshi may not think carefully about some actions.
A reserved personality than he usually shows. Aiden notes that Yoshi's personality is probably more reserved than he demonstrates, but he portrays himself as optimistic and extroverted.
Calm, reserved, shy, independent, brave, sometimes naïve, self-sufficient, sweet and balanced. Despite his character, he knows how to defend his place, he is independent and sometimes daring.

Located in:
New house
Residents:
Sans.
The last corridor (also known as the Judgment Hall) is the corridor between the House of Asgore and the Throne Room of the New House. Sans appears here to talk to Frisk, before they confront Asgore Dreemurr.
Appearance:
The last hallway is a linear, enclosed yellow room with the Delta rune on the entrances and windows. White light shines through the mosaic windows, and the corridor is framed by Greek columns in both the foreground and background.
Trivia:
The golden palette in the Last Corridor room may refer to the yellow SOUL, which symbolizes justice.
The double meaning of the word "justice" is also a play on words, which is quite consistent with Sans's role: he acts as a guardian of the law or a judge, and is also inherently fair, since he is usually neutral and objective in his judgments. Sans also administers justice to Frisk if he has chosen the path of genocide.
Unlike most locations, the Delta rune emblems depicted at the entrances to the Last Corridor have triangles upside down. In the stained glass windows in the same location, the triangles are depicted correctly, so perhaps this is just a mistake.

Since then, Asgore has been eager to avenge his son and hatched a plan to escape from the Dungeon in order to declare a new war on humans. He ordered the killing of all people who enter the Dungeon and the taking of their SOULS. With seven human SOULS, it would be possible to destroy the Barrier. However, the cruelty of this decision disgusted Toriel. She renounced the title of queen and her marriage to Asgore.
Asgore continued to rule the country alone while Toriel hid in the Ruins. Puzzles have become a tradition to help repel human attacks. Over time, six more people ended up in Deepholm, and Toriel tried to protect and take care of them. However, they all eventually left the Ruins and were killed, and their SOULS were taken by Asgore. Over time, Asgore formed the Kingsguard, led by Undyne, to patrol the Underground. Alphys, the new royal scientist, explores the Dungeon with hidden cameras to solve Hotland's puzzles, as well as warn and evacuate monsters if necessary.
The eighth man, Frisk, fell into the Dungeon. Unlike his predecessors, the main character, thanks to his determination, overcame many obstacles that the Dungeon threw at him, and even made friends with many monsters.
Later, in the Dungeon I got ... Monster. Yes, not a person, but a monster - Yoshi.

After the humans defeated the monsters in the War, the losing side was banished to the Dungeon. A barrier was erected to prevent the locals from leaving, but outsiders were still free to enter. Fearful of humans, the monsters took refuge in the Ruins and made the House their first capital, living a normal life in the Dungeon ever since. In addition, traps in the form of puzzles were set up in the Ruins.
At one point, the monsters documented the SOUL-related War and the Rune Delta prophecy on the walls of the Waterfall.
One day, the first man climbed Mount Abbott and tripped over a vine, causing him to fall into the Underground. The man was found by Asriel Dreemurr, son of Asgore and Toriel, and adopted into his family. The appearance of the first man gave the monsters hope. Over time, no longer afraid of humans, the monsters moved beyond the Ruins, inhabited the rest of the Dungeon, and made New Home their new capital.
Unlike Home, some monsters preferred to settle in other places than in the New Home. In the Falls, the monsters have acquired modern technology and objects from the surface. At some point, W.D. Gaster created the CORE to convert electricity for the entire Underground. Snowdin ice blocks help prevent CORE from overheating.
However, one day the first man fell ill and wanted to see flowers in his native village. After his death, Asriel absorbed his SOUL and became a powerful being capable of crossing the Barrier. He carried his body to the center of the human village, where the Golden Flower Patch grew. The humans attacked Asriel, believing that he had killed their child. Not wanting revenge, he returned to the Dungeon with the first human corpse and died in the garden of the New House, where he died of his wounds.

Surface:
Eboot Town • Dungeon
Ruins:
Spider Bake Sale • House • Toriel
Snowdin House:
Snowdin Forest • Mysterious Door • Grillby House • Papyrus & Sans • Dog Shrine
Waterfall:
Garbage Dump • Bluk Acres • Undyne House • Temmie
Thundersnail Village • Artifact
Lab Room • Art Club Room • MTT Resort • CORE • Real Lab
New Home
Asgore's House • Last Corridor • Barrier.
The dungeon is the main setting. This is a vast area inside Mount Ebott, separated from the surface of the Earth. Here is the kingdom of monsters, ruled by King Asgore, and previously by his ex-wife Toriel. Deepholm has a variety of terrain and climate. It consists of five main areas: the Ruins, the cold and snowy Snow Valley, the swampy and cavernous Waterfall Valley, the sultry and barren Hot Valley, and the Capital. The exit from the Deepholm is blocked by the Barrier, erected by humans many years ago. Deepholm can be accessed by anyone by descending to Mount Abbott.

Located in:
Snowdite
_Forest Inhabitants:
Sans, Papyrus, Yoshi, Snowrake, Ice Cap, Small Dog, Childrake, Jiftrot, Jerry, Doggo, Dogami & Dogaressa, Big Dog, Glide, Annoying Dog.
Nicknames:
Snowy, Mysterious, Snowdin City, Sans., Nyeh Heh Heh!.
Snowdin Forest is the second region that can be found in the Dungeon. It is snowy.

Apparently, Sans is left-handed. This is evidenced by:
Greets friends by shaking hands with their left hand.
Holding a bottle of ketchup and drinking from it with his left hand while dining at Grillby's.
Controls the tricycle with his left hand.
Controls gravity with his left hand during combat.
Sans speaks without capitalizing either the name or the beginning of sentences, with a few exceptions, such as the beginning of his judgments and other characteristic changes in his manner of speech that serve to emphasize attention. Perhaps this reflects his laziness.
Even though he does not appear to remember the events directly, his knowledge of facial expressions related to time travel is inexplicable. Perhaps he is just guessing.
Sans' face sprite in the lines is slightly different from his combat sprite. When he speaks in the human world, the top of his head is slightly larger and his mouth is not as wide.
There are a few unused Sans attacks that are much harder to dodge and much harder to master.
Sans is not interested in finding humans, unlike his brother, Papyrus.
Sans is a pasexual.
Sans is secretly in love with Yoshi. His best friend.
According to Papyrus, Sans has a pet stone that he forgets to feed. He can be seen in their house, he is covered in sugar crumbs, which means that Sans is trying to feed him somehow.
Sans is supposed to have scientific knowledge: he has a book on quantum physics, a laboratory behind the house where he lives with Papyrus, and what appears to be a long-standing relationship with Alphys, he has a telescope, and he mentions that he is exploring the space-time continuum.
The snails on the Bluk family's farm remind the Sans Papyrus because, like him, they are round, slow, and "constantly secrete mucus."
According to Papyrus, Sans somehow manages to be on duty at two posts at the same time and, accordingly, does nothing twice as much.

Sans is lazy, often sleeps at work and takes breaks. His laziness is a combination of fatalism and apathy, because he knows about the restart of timelines. On the other hand, he suggests that this knowledge may be "a flimsy excuse for laziness."
He likes to be mischievous. Sans basically behaves this way with those with whom he has a good relationship. His antics range from illogical, childish, and slightly awkward pranks. For example, Sans "sells fried snow," uses air pillows, shares an uncorked bottle of ketchup, and paints with eye paint on a telescope. He is not averse to using teleportation or other magic for pranks. Sans also likes to joke from time to time. He likes to make others laugh because he performs at MTT Resort as a comedian.
Despite Sans's indifference to his own life, he is attentive to those he cares about. For example, Sans is a regular at Grillby, and the monsters and dogs of the Kingsguard treat him kindly. Sans told Big Mouth about the "most incredible foods," but Big Mouth remarked that he "always orders the worst burger on the menu." Though Sans hates making promises, he respects Toriel's request to keep an eye on people.
He is also very observant: Sans reads Frisk's facial expressions and can often tell that he has already performed certain actions. While Sans is usually friendly, he can become intimidatingly serious to emphasize the importance of the topic. Regardless of whether a person is partially or fully merciful, Sans tells them that if the "old lady" (Toriel) hadn't made him promise to protect them, "(they) would be dead where (they) stand." In the True Pacifist Route, Sans says that he is joking, but during the Genocide Route, he does everything in his power to kill Frisk, even feigning mercy.
Perhaps Sans has a scientific background. This is evidenced by a book on quantum physics, his workshop, his love of science, his inexplicable ability to teleport, and timeline research

In his usual form, Sans appears as a relatively short and chubby skeleton with mitten-like hands. Sans always has a wide, toothy smile on his face (even in the form of a "human"). He wears a blue hoodie with a gray hoodie, a white T-shirt underneath, black shorts with white stripes, and slippers. There are white dots in his black eye sockets that disappear when he is serious or angry. When Sans uses telekinesis during combat, his left eye flashes blue and yellow (the colors of patience and justice) and his right pupil disappears.
Humanization:
When Sans wants to take on his relatively "human" form, his body turns blue, and then higher, when reincarnated. In the form of a "person", he has exactly the same clothes (the same sweatshirt, trousers and T-shirt), but larger - as he has become taller. But he has pale skin, and also hair appears - fluffy, white. Its eyes are also black with a white pupil (the ability to change remains). He looks like a person. By the way, his abilities and skills remain in a "human" form.

Full Name:
Sans
Nicknames:
Sancy
TROLL UNDER SIEGE (Nicknamed by Papyrus)
Skeleton Sans (Nicknamed by Himself)
Brother (nicknamed by Papyrus)
Smiley Bag of Trash (nicknamed by Flowey)
Easiest Enemy
Family:
Unnamed Parents
Papyrus (Younger Brother)
Friends:
Yoshi (Best Friend & Love Interest)
Toriel (Close friend)
Alphys (Girlfriend)
Species/Nationality:
Skeleton;
Half-human (Humanization)
Height:
160 cm (Skeleton)
180 cm (Human)
Age:
500 [?] (How long does he live)
25 (Physical)
Occupation:
Guardian in Snowdin Forest and Waterfall
Illegal Hot Dog Vendor in Hotland
Abilities:
Genius Intelligence
Deception
Unpredictability
Teleportation
Skeletal
Physiology Magical Osteokinesis
Magical Energy Generation (via Gaster Blasters)
Time
ManipulationKarmic Retribution (Poison Effect / Damage Over Time)
Clairvoyance,
Incredible Stealth,
Evasion Skills/Reflexes,
Charisma,
Cunning,
Agility,
Breaking the Rules, Temperature Immunity,

Trombone Skills, Gravity Manipulation,
(in blue SOUL mode)
Aerokinesis (possibly)
Hobbies:
Pranks,Kidding
/Kidding,Slacking
Off,Annoying
Papyrus
Goals:
Make Yoshi and Papyrus happy.
Make sure Yoshi is safe (Successful),
Make Frisk give up trying to defeat him.