Characters in Captain Underpants and the revolting revenge of the radioactive robo-boxers

George Beard

Also in The Adventures of Captain Underpants, Captain Underpants and the Attack of the Talking Toilets, Captain Underpants and the Perilous Plot of Professor Poopypants, Captain Underpants and the Wrath of the Wicked Wedgie Woman, Captain Underpants and the big, bad battle of the Bionic Booger Boy, part 1, Captain Underpants and the Tyrannical Retaliation of the Turbo Toilet 2000, Captain Underpants and the Sensational Saga of Sir Stinks-A-Lot, Captain Underpants Books 1-4 Boxset

Harold Hutchins

Also in The Adventures of Captain Underpants, Captain Underpants and the Attack of the Talking Toilets, Captain Underpants and the Perilous Plot of Professor Poopypants, Captain Underpants and the Wrath of the Wicked Wedgie Woman, Captain Underpants and the big, bad battle of the Bionic Booger Boy, part 1, Captain Underpants and the Tyrannical Retaliation of the Turbo Toilet 2000, Captain Underpants and the Sensational Saga of Sir Stinks-A-Lot, Captain Underpants Books 1-4 Boxset

Captain Underpants

Also in Captain Underpants and the Attack of the Talking Toilets, Captain Underpants and the Invasion of the Incredibly Naughty Cafeteria Ladies from Outer Space, Captain Underpants and the Wrath of the Wicked Wedgie Woman, Captain Underpants and the big, bad battle of the Bionic Booger Boy, part 1, Captain Underpants and the Big, Bad Battle of the Bionic Booger Boy, Captain Underpants and the Preposterous Plight of the Purple Potty People, Captain Underpants and the Tyrannical Retaliation of the Turbo Toilet 2000, Captain Underpants Books 1-4 Boxset, Three More Wedgie-powered Adventures in one

Tippy Tinkletrousers