The Gigantic Collection of Captain Underpants by Dav Pilkey.

12 books included:

1. The Adventures of Captain Underpants
2. Attack of the Talking Toilets
3. Invasion of the Incredibly Naughty Cafeteria Ladies from Outer Space
4. Perilous Plot of Professor Poopypants
5. Wrath of the Wicked Wedgie Woman
6. Big, Bad Battle of the Bionic Booger Boy, Part 1: The Night of the Nasty Nostril Nuggets
7. Big, Bad Battle of the Bionic Booger Boy, Part 2: The Revenge of the Ridiculous Robo-Boogers
8. Preposterous Plight of the Purple Potty People
9. Terrifying Return of Tippy Tinkletrousers
10. Revolting Revenge of the Radioactive Robo-Boxers
11. Tyrannical Retaliation of the Turbo Toilet 2000
12. Sensational Saga of Sir Stinks-A-Lot

This was an unwanted gift. My son removed the plastic shrink wrapping but never read the books - this is in as new condition.

Pick up only, from Miramar, Wellington.