From Dav Pilkey creator of Captain Underpants and acclaimed artist Dan Santat a thrilling friendship adventure with allnew fullcolor illustrations and minicomics throughout Having a big best friend isnt always big fun...Ricky Ricotta loves his Mighty Robot. They do everything together but its sometimes hard for a small mouse to have such a big buddy If only the Mighty Robot could find someone his own size to play with Ricky might finally have some fun by himself.Little does Ricky know his wish is about to come true. Evil Uncle Unicorn has a topsecret plan to trap the Mighty Robot so that he can take over Earth and hes got a giant surprise in store. Once again its up to Ricky to save the planet and his best friend show more