Captain Underpants Wiki

“Don’t look now," “but a bunch of kids are out in the parking lot filling up our cars with low-fat cottage cheese!”
  —Mr. Rustworthy [src]  

Mr. Rustworthy is the music teacher at Jerome Horwitz Elementary School. He is a nice teacher who likes children, especially George and Harold (both facts are stark contrast from most of the other staff), but not food fights. His name is a pun to the word "mistrustworthy."


Captain Underpants and the Wrath of the Wicked Wedgie Woman[]

He witnesses the children having a food fight and the football team destroying the teacher's lounge.

Captain Underpants: The First Epic Movie[]

He is a minor character in the film, not doing anything particularly notable.