Tim Healey 
Robot Riot [EPUB ebook] 

A wickedly funny series that will appeal to all young scientists, created by Chris Mould, illustrator of A Boy Called Christmas and Tim Healey. If you like Horrid Henry, you’ll love Mortimer Keene.Mortimer Keene is full to bursting with madcap plans, and if it’s trouble you’re after, look no further! With laugh-out-loud illustrations, rollicking rhymes, and short chapters perfect for new readers.Mortimer Keene has made a robot! Several, in fact. And they’re all being helpful around the school. Until Robo-13 goes haywire and hacks into the Robot Control system. Soon the robots are causing complete chaos! Can Mortimer regain control over his monstrous machines?’Hilarious!’ – Guardian