Baldi is the head teacher of the Super Schoolhouse and likes to give math problems. He's a poorly-modeled CGI humanoid appearance, and a single hair. He wears a green shirt, blue jeans, and brown shoes. He has exceptional hearing. He's generally goofy, happy-go-lucky, inventive, gluttonous, and loves green and apples. However, he gets infuriated if you get a problem wrong, slapping his ruler and chasing you. He can switch back to being friendly in a snap, even sometimes giving tips to evade him.