Sans

Playfulness. Sans loves to tease others, and he enjoys both laughter and the anger of jokes equally.

Attentiveness. Sans can understand a lot just by looking at someone's facial expression.

A passion for science and science fiction. The character owns a book on quantum physics, a workshop, and an interest in timeline research.

Keeping promises. Sans doesn't like making promises, but once he does, he tries to keep them to the end.

Caring for loved ones. Despite his indifference to his own life, the character is attentive to those he cares about.

Contradictory. Sans is an ambiguous character; he can be neither good nor bad. He can be both benevolent and evil.

Appearance: A skeleton wearing a blue jacket (or hoodie), black shorts with white stripes, and pink slippers (on the official Steam card, they're sneakers). He's always depicted with a large, toothy grin. His eyes have white pupils that disappear when he's serious or angry. When using telekinesis, his left eye develops an iris that flashes yellow and blue.