

Though Sans is usually agreeable, he becomes eerily serious at particular moments. Conversely, he suggests that this knowledge could be "a poor excuse for being lazy." He wonders if his indolence stems from his knowledge that any progress he makes will be erased when the timeline resets.

His laziness is a combination of fatalism and apathy.

Sans is laid-back and flippant, often sleeping on the job and taking breaks. (however he does grimace/frown upon being hit in the Genocide Route and is shown sometimes frowning in Fan-art) When Sans uses telekinesis, his left eye flashes light blue and yellow, the colors for Patience and Justice, and his right pupil disappears. He wears an unzipped blue hoodie, a white 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. Nothing really changes about the game except for the True Pacifist Ending, which becomes what is known as the Soulless Ending.Sans appears as a short, paunchy skeleton with a wide toothy smirk, large eye sockets. When you get to the end of the game on a genocide run, the fallen child will appear and offer you a chance to reset the game at the cost of your soul. Resetting the data will reset your run logs, which would let you run another, "clean" run. Go into the game settings (open settings and the game data menu - undertale) and reset the data. When you reload it you'll get nothing but a black screen - wait 10 minutes, and you'll be offered another choice. On the whole, How long do you have to wait after genocide Undertale? How long do you have to wait in Undertale genocide ending? If you refuse, the fallen child will kill you and force quit the game.

