Who gave maniac Magee his nickname?

Maniac Magee, the main character in Jerry Spinelli's novel, earned his nickname from the townspeople of Two Mills. They began calling him "Maniac" due to his extraordinary running abilities and the wild, adventurous nature of his exploits. His fearless actions, including running away from home and running across town, contributed to the nickname, which reflected both admiration and a hint of disbelief at his feats.