Sans is a fictional character from the indie video game Undertale, created by Toby Fox. He is a laid-back skeleton who is often seen cracking jokes and puns, especially those involving skeletons. Despite his lazy demeanor, Sans is a powerful character with the ability to teleport and manipulate space. In the game, he serves as both a comedic relief and a formidable adversary, particularly in certain game paths. Sans is known for breaking the fourth wall and his deep understanding of the game's mechanics, adding layers to his mysterious persona.