Y/n's Profile

Appearance

(the picture above)
Y/n appears as a short, paunchy skeleton with a wide toothy grin, glove-like hands and large eye sockets. He wears an unzipped blue hoodie, a white shirt, black shorts with white lining, and a pair of slippers. He has white pupils that disappear when he is serious or angered. When Y/n uses telekinesis, his left eye flashes light blue and yellow, the colors for patience and justice, and his right pupil disappears. He has large bags under his eye sockets, which have white glowing pupils floating in in it.

(Now since sans is 4'5 I'm just gonna make you guys 5'0. If you wanna be the same height as him in this story go ahead. Just imagine it.)

Personality

Y/n is laid back and flippant, often sleeping on the job and taking breaks. His laziness is a combination of fatalism and apathy. He wonders if his indolence stems from his knowledge that any progress he makes will be erased when the timeline resets. Conversely, he suggests that this knowledge could be "a poor excuse for being lazy."On the other hand, when Papyrus becomes the leader, Y/n is implied to be working harder despite not denying his laziness upon being called out on it. This is because while Y/n is apathetic towards life, he is never apathetic towards the people he cares about.(I'll tell you more throughout the story and who will be in it.)

Powers & Abilities
Bones: One of Y/ns' and Papyrus' signature abilities is the power to summon bones to attack their opponents. While Papyrus' were usually easy to dodge, Y/n can summon large groups of them easily and with great speed, making them harder to predict and dodge by comparison. Y/n can also summon blue bones that only damage people if they're moving when they touch the bones.

Soul Manipulation: Blue Mode: Another of the skeleton brothers' signature attacks, Blue Mode grants Y/n the ability to make enemy souls affected by gravity. While affected by Blue Mode, enemies have their movement heavily restricted, and are only able to jump to move. Y/n can also use this to telekinetically lift and move his opponent, letting him slam them around with his mind.

Karmic Retribution: A side effect of Y/ns' attacks, Karmic Retribution acts as poison for the soul, whittling down an enemy's health once Y/n hits them. While it only drains a little at a time, it's drain increases based on how many sins the opponent has committed.

Teleportation: Somehow, Y/n obtained the ability to teleport, which he often uses as a shortcut to get places quicker. However, in battle, Y/n uses it to move his foe straight into a new attack once his old one ends, making him far more unpredictable.

Background
Y/n and his brother Papyrus are skeletons, who one day, showed up in the town of Snowdin out of nowhere in the Underground, a land below the surface of the Earth where monsters live. Unlike his flamboyant and loud brother, Y/n is laid-back and pretty lazy. One day, a human child named Frisk showed up in the Underground. When they entered Snowdin for the first time, Y/n was there to meet them. Sans told them about Papyrus, who hoped to capture a human to become a member of the Underground's Royal Guard, and asked if Frisk would show himself to Papyrus just to make him happy to see a human. Frisk agreed, and while Papyrus didn't capture him, Frisk befriended the skeleton brothers. However, Y/n still hides several secrets and a large amount of power underneath his laziness, being the one who killed the sentient flower Flowey more times than any monster.

In Undertale's Genocide Route, where the player character is possessed by the genocidal spirit Charaand kills every monster in the Underground, Sans is the only one left before they reach King Asgore break the barrier, and escape to cause havoc on the surface. Y/n states that he knows about the player's ability to save and load the game, effectively letting them reset time, and hopes that, even though he can't kill them since they'll just come back, he can still be such a difficult and unfair opponent to beat, that the player just quits the game. It is here that the reason for Y/ns' laziness is revealed. Because of his knowledge of the save ability, Y/n has adopted an extremely nihilistic worldview. He believes that, because time can be reset just by the will of one person, nothing he does matters, since it could be undone in an instant.

He has a huge round skull shaped similarly to a slice of bread and has large bags under his eye sockets, which have white glowing pupils floating in it. He also has a very large toothy grin, one strange thing about his skeletal body are his hands which look more like mittens rather than skeletal hands.

Equipment
Gaster Blasters: Portable laser cannons shaped like dragon skulls that Sans can summon at will. They levitate off the ground and fire at Y/ns' will, and Y/n can summon as many as he wants.

Feats:

Strength:
Implied to have smashed a branch too heavy for Frisk to lift into pieces like it was nothing.

Speed:

Dodged almost all of Chara/Frisk's attacks during his fight with them.

Reacted to an attack coming at him in his sleep.

Durability:

Was able to stand up and slowly limp away from a knife wound to the chest.

Skill:

Defeated and killed Flowey several times.

Put up a tough fight against Chara/Frisk, who can kill almost every enemy in the game with one hit.

Very genre-savvy, and likes to manipulate RPG tropes in battle.

Weaknesses

Laziness: Y/n will only give a fight his all if it's absolutely necessary. He doesn't like putting effort into most anything and has even fallen asleep during battle if he has to wait for too long.

Low Stats: While difficult to beat due to his skill and varied attacks, (Sans has the lowest stats of any enemy in Undertale, with 1 ATK and 1 DEF.) Each of his attacks does one point of damage, though Karmic Retribution and the sheer number of attacks he uses at once helps remedy this. Not to mention, while he does technically only do 1 point of damage, it's one point of damage every millisecond. However, one good hit can take him out, which is why he needs to dodge to prevent getting taken out.

Fun Fact

Y/n is most likely left-handed since he gives handshakes, holds a bottle, and uses magic with his left hand.
(

If you're right handed that's fine)