Adventures of Ook and Gluk: Kung Fu Cavemen from the Future (Captain Underpants Book 1)

#1 · Adventures of Ook and Gluk: Kung Fu Cavemen from the Future (Captain Underpants Book 1) #2 · Captain Underpants and the Attack of the Talking Toilets (Captain Underpants #2) #3 · Captain Underpants and the Invasion of the Incredibly Naughty Cafeteria Ladies From Outer Space: Color Edition (Captain Underpants #3): (And the ... the Equally Evil Lunchroom Zombie Nerds) #4 · Captain Underpants and the Perilous Plot of Professor Poopypants: Color Edition (Captain Underpants #4) #5 · Captain Underpants and the Wrath of the Wicked Wedgie Woman (Captain Underpants #5) (5) #6 · Captain Underpants and the Big, Bad Battle of the Bionic Booger Boy, Part 1: The Night of the Nasty Nostril Nuggets (Captain Underpants #6) (6) #7 · Captain Underpants and the Big, Bad Battle of the Bionic Booger Boy Part 2: The Revenge of the Ridiculous Robo-Boogers (Captain Underpants #7) #8 · Captain Underpants and the Preposterous Plight of the Purple Potty People: Color Edition (Captain Underpants #8) #9 · Captain Underpants and the Terrifying Return of Tippy Tinkletrousers (Captain Underpants #9) (9) #10 · Captain Underpants and the Revolting Revenge of the Radioactive Robo-Boxers (Captain Underpants #10) (10) #11 · Captain Underpants and the Tyrannical Retaliation of the Turbo Toilet 2000 (Captain Underpants #11) (11) #12 · Captain Underpants and the Sensational Saga of Sir Stinks-A-Lot (Captain Underpants #12)