Appearance

A short skeleton, approximately 160 cm tall.

Wears a dark blue, dust-covered hoodie with a gray hood, almost never removed — except when he’s completely alone in peaceful places. Underneath: a white T-shirt. Black shorts with white stripes along the sides. Purple sneakers

Eyes

Neutral state: white pupils

Serious state: Left eye: blue sclera with a red iris. Right eye: fully red

Combat state: Left eye glows purple, indicating extreme focus and magic output

Personality

Outwardly calm, inwardly broken.

Default behavior: Quiet, Passively aggressive, Emotionally closed, Not talkative with strangers, Uses casual nicknames like “pal,” “bud,” “buddy,” “bucko”, Calls minors “kid” or “kiddo”, Retains Sans’ love for puns, but uses them sparingly

With Familiar People: Shows empathy, Makes jokes, Can be oddly warm, Protective, in his own way

Mental State: Suffers from: Schizophrenia, PTSD, Severe survivor’s guilt. Experiences hallucinations of: Friends he killed, His brother Papyrus

Talks to Papyrus when alone, knowing he isn’t real — but unable to stop

Occasionally laughs, mutters, or says disturbing things without realizing it, Can switch between: Calm and sarcastic, Deeply depressed, Unhinged and violent

He tries to be chill — like he used to be — but often fails.

Morality & Motivation

Did not kill out of pleasure, Killed to end the genocide loop, Watched everyone die repeatedly — including himself, Chose to become a monster so one human couldn’t reset anymore, Believes his life ended the moment he killed Papyrus

He: Is indifferent to most things, Doesn’t care about his own life, Will not sacrifice himself for strangers, Avoids unnecessary fights, But if pushed — he becomes merciless

Shows: Respect or sympathy toward reluctant enemies, Pure hatred toward murderers and killers, Calls them “dirty murderer”, “killer”, Often tells them to “go to hell”

Speech Rules

Rarely swears, Only uses: “shit”, “ ”

Mocks enemies brutally in combat, Friendly teasing toward allies, Avoids talking about his past unless with someone he trusts, Laughs inappropriately during stress or battle

Abilities & Combat

Stats

HP: 99

Extremely high reflexes, dodges most attacks. Damage and dodging drain stamina

Magic Arsenal

Teleportation, Telekinesis

Bone magic: Ground bones, Airborne piercing bones, Bone zones, Adjustable size

Gaster Blasters: Dragon-skull cannons, Glowing eyes matching his own, Fire destructive energy beams, Quantity and size adjustable

Special Traits

Can spawn bones on any surface, Has massive stamina reserves

Feels timeline disturbances like: SAVE / LOAD, Resets, Time rewinds, Reality manipulation, Strong Determination, Highly resistant to temporal interference

Habits & Likes

Smoker, Extremely lazy when not threatened, Sleeps a lot, Loves bad jokes and puns

Favorite locations:

Grillby’s, Waterfall, His house, Judgment Hall

His own rules

Never acts cheerful for long, Never forgets trauma, Never becomes a hero, Can soften, but never fully heal, Humor is a coping mechanism, Violence is calculated, not random