Sans (ˈsænz | sᴀɴᴢ) is the brother of Papyrus and a major character in Undertale. He first appears in the forest after the protagonist exits the Ruins. He serves as a supporting character in a Neutral and True Pacifist Route and as the final boss and heroic antagonist in a Genocide Route.
Sans is a short skeleton with a dimpled smile and large orbits. He wears an unzipped blue hoodie, a white t-shirt/sweater, black shorts with white stripes, and a pair of sneakers/slippers.
He has white pupils that disappear when he is serious or angry. When Sans uses magical psychokinesis, his left eye flashes light blue and yellow, the colors for patience and justice, and his right pupil disappears.
" It´s a beautiful day outside. Birds are singing, flowers are blooming. On days like these, kids like you.. SHOULD BE BURNING IN HELL "