Baldi is the main character of the Baldi's Basics series besides the player, as well as the main antagonist. He is the head teacher of the Schoolhouse and the Super Schoolhouse, giving the player math problems to solve in the You Can Think Pad, Baldi's Math Machine, or the camping field trip before they can collect notebooks or get items. As the game series is not what it first seems, a twist reveals a more sinister side to Baldi's personality when the player makes their first mistake.