Ricky Ricotta's mighty robot - Dav Pilkey

From the creator of CAPTAIN UNDERPANTS, comes an out-of-this-world
friendship adventure - now in full colour!
Ricky Ricotta is a lonely mouse. Often he finds himself being picked
on by bullies at school. He is waiting for his life to change
for the better--for something BIG to happen.
Meanwhile, Dr. Stinky McNasty is up to no good. He wants to take
over the entire city of Squeakyville. He has built a monstrously-sized
robot and now orders it to destroy the city! But with Ricky
Ricotta's help, the robot gets away!
Soon, nobody can pick on Ricky Ricotta any more. He and his robot
get to teach those bullies a lesson. But Dr. Stinky wants revenge
and creates a giant lizard to destroy it. A battle ensues, and
in tried-and-true Flip-O-Rama fashion fun, the good guys come out
on top!