Sans★

Sans is a short skeleton with a slightly large head, he almost always wears a blue hoodie or jacket that is unbuttoned at all times, underneath it he wears a white shirt, he has black shorts with a white line on the sides and pink slippers. He always wears 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.

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).

Sans has an obsession with puns and ketchup (plus he can get drunk on ketchup)