An out-of-this-world friendship adventure by Captain Underpants creator Dav Pilkey, with full-color art and mini comics by Caldecott Medalist Dan Santat. Ricky

Infuriated by the declaration that Pluto is no longer a planet, President Penguin and his penguins invade Earth and it is up to Ricky and his robot pal to defea

From Dav Pilkey, creator of Captain Underpants, and acclaimed artist Dan Santat, an out-of-this-world friendship adventure with all-new full-color illustrations

Meet Ricky Ricotta. He's an ordinary mouse with ordinary problems-sometimes he gets picked on at school and feels a bit lonely. Then, one day, a giant flying Ro

From Dav Pilkey, creator of Captain Underpants, and acclaimed artist Dan Santat, an out-of-this-world friendship adventure with all-new full-color illustrations