Nice Benjamin Krupp

"Please eat my plump, juicy boogers? That's gotta be the funniest thing I've seen all day! You boys really crack me up! You're hilarious!"

- Nice Mr. Krupp

Nice Benjamin Krupp is the nice counterpart of Benjamin Krupp. He is from the alternate "Purple Potty" universe.

He appears only in Captain Underpants and the Preposterous Plight of the Purple Potty People.

Captain Underpants and the Preposterous Plight of the Purple Potty People
Continuing from the previous book, George, Harold, Sulu, and Crackers have ended up in an alternate universe that is an opposite version of their own world. George and Harold discover that Mr. Krupp is nice and does not wear a toupee in this universe.

The duo finally get back to their dimension of the multiverse, but unintentionally bring Evil George, Evil Harold, Nice Mr. Krupp (he wanted to pet Crackers), and Sulu with them. As they realized what reality they were in Evil George and Evil Harold get water on Nice Mr. Krupp's head, transforming him into Captain Blunderpants and off they fly into the city to raise chaos.

Later Captain Blunderpants and Captain Underpants were about to face off against one another in an epic battle but before it could happen, Good George snapped his fingers and Captain Blunderpants became Nice Mr. Krupp. However, the moment is short-lived when it starts to rain and both begin to change as their happiness turns into pure anger and hatred. Captain Underpants comes out of his trance into Nasty Mr. Krupp while Nice Mr. Krupp comes into his trance becoming Captain Blunderpants, again breaking out of the ropes in rage as an angry Mr. Krupp storms off, back to his house dressed as Captain Underpants, not contributing to what is going on around him and assuming it all a dream. Good George and Harold snaps their fingers trying to get Nasty Mr. Krupp to turn back in Captain Underpants and Blunderpants back to Nice Mr. Krupp but due to the rain pouring too hard it is impossible.