Dav Pilkey 
Ricky Ricotta’s Mighty Robot vs the Un-Pleasant Penguins from Pluto [EPUB ebook] 

From the creator of CAPTAIN UNDERPANTS, comes a BRAND NEW out-of-this-world friendship adventure — in full colour! Ricky may be small in size, but he’s a big hero with an even BIGGER best friend! Like most best friends, Ricky and his Mighty Robot do everything together. So when the Unpleasant Penguins from Pluto invade Squeakyville and try to take over Earth, it’s up to Ricky and his Mighty Robot to fight these flightless felons and send them back to their own (former) planet! This is a never-before-seen RICKY RICOTTA adventure!