Sans (/sænz/) is the
brother of Papyrus and a major character in Undertale. He first appears in Snowdin
Forest after the protagonist exits the Ruins. He serves as a supporting character in the Neutral and True Pacifist routes, and as the final boss and heroic antagonist in the Genocide Route.
Sans appears as a relatively
short and paunchy skeleton, with mitten-like hands. Sans is always seen with a wide, toothy-grin on his face. Sans wears a blue hoodie, a white
t-shirt underneath, black shorts with white stripes, and a pair of slippers. He has
white dots in black eye sockets 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) while his right pupil vanishes.
Sans is
lazy, often sleeping on the job and taking breaks. His laziness is a combination of fatalism and apathy, as he is aware of timeline resets. Conversely, he suggests that this knowledge could be "a poor excuse for being
lazy."
He enjoys being mischievous. Sans primarily acts this way towards those he is in good terms with. His antics range from an assortment of illogical, juvenile, and slightly inconvenient pranks. Examples include Sans "selling fried
snow," using whoopee cushions, sharing an unscrewed ketchup bottle, and eye paint on a telescope. He is not above utilizing his teleporting or other magic for practical jokes either. Sans is also fond of making the occasional
low-brow puns.