Captain Underpants

1. 

   Book 1

   The Adventures of Captain Underpants

   Dav Pilkey

2. 

   Book 2

   Captain Underpants and the Attack of the Talking Toilets

   Dav Pilkey

3. 

   Book 3

   Captain Underpants and the Invasion of the Incredibly Naughty Cafeteria Ladies from Outer Space

   Dav Pilkey

4. 

   Book 4

   Captain Underpants and the Perilous Plot of Professor Poopypants

   Dav Pilkey

5. 

   Book 5

   Captain Underpants and the Wrath of the Wicked Wedgie Woman

   Dav Pilkey

6. 

   Book 6

   Captain Underpants and the big, bad battle of the Bionic Booger Boy, part 1

   Dav Pilkey

7. 

   Book 7

   Captain Underpants and the Big, Bad Battle of the Bionic Booger Boy, part 2

   Dav Pilkey

8. 

   Book 8

   Captain Underpants and the Preposterous Plight of the Purple Potty People

   Dav Pilkey

9. 

   Book 9

   Captain Underpants and the terrifying return of Tippy Tinkletrousers

   Dav Pilkey

10. 

    Book 10

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

    Dav Pilkey

11. 

    Book 11

    Captain Underpants and the Tyrannical Retaliation of the Turbo Toilet 2000

    Dav Pilkey

12. 

    Book 12

    Captain Underpants and the Sensational Saga of Sir Stinks-A-Lot

    Dav Pilkey

13. 

    The adventures of Super Diaper Baby

    Dav Pilkey

14. 

    The Adventures of Ook and Gluk, Kung Fu Cavemen from the Future

    Dav Pilkey

15. 

    The All New Captain Underpants Extra-Crunchy Book O' Fun 2

    Dav Pilkey

16. 

    Captain Underpants--three pant-tastic novels in one

    Dav Pilkey

Book data and covers from Open Library (openlibrary.org).