Ricky Ricotta’s Mighty Robot by Dav Pilkey

As he spends his days navigating school and trying (but failing) to avoid bullies, the Dr. Stinky McNasty is hard at work in his secret cave, creating a mighty robot to destroy the city. … When McNasty attempts revenge with the help of a giant lizard, the Mighty Robot is there to save the day. Ricky Ricotta’s Mighty Robot by Dav Pilkey (soft cover)