- "Oh, hi! Welcome to my schoolhouse!"
- – Baldi
Baldi is the main character of the Baldi's Basics series. He is the head professor 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 obtain items. As the whole game is not what it first seems, a twist reveals a more sinister side to Baldi's personality when the player makes their first mistake.