Fans of Dav Pilkey’s Captain Underpants series will also enjoy his Ricky Ricotta books.  Ricky is a mouse whose best friend is a huge, flying robot.  In this adventure, a Martian named Major Monkey plans to conquer Earth with his own gigantic mechanical monkeys.  Ricky and his robot are able to outwit Major Monkey and overcome the mecha-monkeys.  Also included are the “Flip-O-Rama” actions found in the Captain Underpants books.  Dan Santat illustrates this edition with large, colorful artwork.  This book was originally published in 2002, illustrated in black and white by Dav Pilkey.