Captain Underpants · #10 / 13
Captain Underpants and the Revolting Revenge of the Radioactive Robo-Boxers
George and Harold have been turned into evil zombie nerds doomed to roam a devastated, postapocalyptic planet for all eternity! Unfortunately, the boys can't count on Captain Underpants for help because Tippy Tinkletrousers and his time-traveling hijinks prevented George and Harold from creating him in the first place! With Tippy having changed the course of human history forever, George and Harold will have to figure out a way to change it back!
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George and Harold have created the greatest superhero in the history of their elementary school -- and now they're going to bring him to life! Meet Captain Underpants! His true identity is SO secret, even HE doesn't know who he is!
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#5 · 2017Captain Underpants and the Wrath of the Wicked Wedgie Woman 
#6 · 2018Captain Underpants and the Big, Bad Battle of the Bionic Booger Boy, Part 1: The Night of the Nasty Nostril Nuggets 
#7 · 2018Captain Underpants and the Big, Bad Battle of the Bionic Booger Boy, Part 2: The Revenge of the Ridiculous Robo-Boogers 
#8 · 2019Captain Underpants and the Preposterous Plight of the Purple Potty People 
#9 · 2019Captain Underpants and the Terrifying Return of Tippy Tinkletrousers 
#10 · 2020Captain Underpants and the Revolting Revenge of the Radioactive Robo-Boxers 
#11 · 2021Captain Underpants and the Tyrannical Retaliation of the Turbo Toilet 2000 
#12 · 2022Captain Underpants and the Sensational Saga of Sir Stinks-A-Lot 
#13 · 2022The Captain Underpants Double-Crunchy Book o' Fun Be the first reviewer
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