"Sans appears as a short, paunchy skeleton with a wide toothy smirk, large eye sockets. He wears an unzipped blue hoodie, a white tank-top, black shorts with white lining, and a pair of salmon-colored slippers. He has white pupils that disappear when he is serious or angered. When Sans uses telekinesis, his left eye flashes light blue and yellow, the colors for patience and justice, and his right pupil disappears."

"Sans 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." - Undertale Wiki.

Has a deep, low voice.

Assigned voice: Bob from Street Fighter or Bulkhead, Transformers: Prime (Kevin M. Richardson)