Captain Underpants and the Revolting Revenge of the Radioactive Robo-Boxers Colour
by Dav Pilkey
2021
Great fit for 4th grade
Reading level and content both target 4th–8th grade · ages 9–14
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Genre
Themes
- friendship
- time travel
- good vs. evil
- teamwork
- creativity and imagination
- consequences of choices
- bravery
- perseverance
About this book
George and Harold are back—along with Captain Underpants—in a wild, time-twisting adventure packed with comic mayhem, robots, and ridiculous laughs. When a villain’s time-travel scheme upends everything, the boys must outsmart danger across past and future to set things right. Fast-paced chapters, cartoons, and Flip-O-Rama action make this a hit for kids who love goofy humor and high-stakes silliness. Great for reluctant readers and fans of Dav Pilkey’s over-the-top, imaginative antics.
Setting: time-traveling adventure spanning a postapocalyptic future, the present day, and the distant past
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Frequently Asked Questions
Is Captain Underpants and the Revolting Revenge of the Radioactive Robo-Boxers Colour right for my child?
Yes — Captain Underpants and the Revolting Revenge of the Radioactive Robo-Boxers Colour is a great fit for 4th grade. The reading level is AR 4.8, which is typical for 4th grade. The interest level is rated Middle Grades (4–8), meaning the themes and content are designed for ages 9–14 (4th–8th grade). Themes include friendship, time travel, good vs. evil.
How long does it take to read Captain Underpants and the Revolting Revenge of the Radioactive Robo-Boxers Colour?
At a typical 4th grade reading pace, Captain Underpants and the Revolting Revenge of the Radioactive Robo-Boxers Colour takes around 1.6h to finish. The book has 14,000 words. Slower or faster readers may vary significantly.
Does Captain Underpants and the Revolting Revenge of the Radioactive Robo-Boxers Colour have an AR quiz?
Yes — Captain Underpants and the Revolting Revenge of the Radioactive Robo-Boxers Colour has an AR quiz available, worth 2 points. Your child will need to take and pass the quiz through their school's Accelerated Reader program to earn credit. The quiz is typically 5–20 multiple choice questions about plot, characters, and setting.
What grade level is Captain Underpants and the Revolting Revenge of the Radioactive Robo-Boxers Colour?
Captain Underpants and the Revolting Revenge of the Radioactive Robo-Boxers Colour has an AR reading level of 4.8, which places it at a 4th grade reading difficulty. The interest level is rated Middle Grades (4–8) — this reflects the age-appropriateness of the content and themes, not just the reading difficulty. A strong younger reader may handle the words fine while the themes are aimed at an older audience, or vice versa.