Captain Underpants

Captain Underpants is the Main Character of the children's book: Captain Underpants

Fanon Wiki Ideas so Far
None so Far

Possible Opponents

 * Blossom (Powerpuff Girls)
 * Superman (DC Comics)
 * Uncle Grandpa
 * Mighty Robot (Rick Ricotta's Mighty Robot)
 * Spongebob Squarepants