Author, Creator, Writer · 26 titles
9 titles
Captain Underpants and the Preposterous Plight of the Purple Potty PeopleBook· 2006Author
DragonSeries· 2004Creator
Ricky Ricotta's Mighty Robot vs. the Stupid Stinkbugs from SaturnBook· 2003Author
The adventures of Super Diaper BabyBook· 2002Author
Ricky Ricotta's Mighty Robot vs. the Jurassic Jackrabbits from JupiterBook· 2002Author
Ricky Ricotta's Mighty Robot vs. the Uranium unicorns from UranusBook· 2002Author
Captain Underpants and the Wrath of the Wicked Wedgie WomanBook· 2001