Book 1

Max is just an ordinary, slightly scruffy boy, until he burps, when he turns into a huge monster, with teeth like swords, who can jump over buildings, roar and eat whole dustbins. It's great being a monster whose aim is to 'protect and do good stuff' until Max sneezes, when he turns back into a boy again, sometimes far from home and dressed only in his pants.
But something starts causing a lot of damage in his quiet suburb and it isn't Max. Trailed by his nemesis, Peregrine, a boy his age who has invented a POOP (portable operating omni prison) machine to catch the monster, Max has to find the real culprit before Peregrine catches him...

Book 2

Max is an ordinary boy, except that he can turn into a monster when he burps... Max and Peregrine are volunteering at an old people’s home when strange things start to happen. One resident is walking on the ceiling, another is riding their wheelchair through walls, and Reggie says his marmalade is haunted (no one listens). Can Max and his friends work out what’s happening and protect his family and the local community? Things aren’t looking good: the Marmalade Ghost is turning into a sticky Godzilla, Max falls out with his (joint) best friend, and then just when it can’t get any worse, someone kidnaps his cat, Frankenstein... Time to ‘Protect and Do Good Stuff!'

Book 3

This Time It's Sirius

by Robin Bennett

Published 31 August 2023
Max can turn into a huge monster just by BURPING, and back again when he SNEEZES. Now Max and his best friend Peregrine realise that a dangerous pack of werewolves from Max’s home country of Krit are closing in on him and his family. But Max hasn’t told anyone about Sirius the tiny werewolf cub he found, smuggled home, and decided to keep...