Captain Blunderpants is the evil twin of Captain Underpants. He is from the Purple Potty dimension. He was defeated by George and Harold. When he is Mr. Krupp he is nice. But when he is Captain Blunderpants he is mean and evil. When water is poured on his head he becomes Captain Blunderpants. But when someone snaps their fingers he turns back into Mr. Krupp. Also when Captain Blunderpants is in his bad form he has a toupee. But when he's in Mr. Krupp form he doesn't wear a toupee.
Captain Blunderpants is evil and very mean. But when he is in Mr. Krupp form he is the best principal you would know.