"I wish I'd had these books as a kid. Hilarious!" – Dav Pilkey, creator of Captain Underpants and Dog Man
They sound like the Bad Guys, they look like the Bad Guys ... and they even smell like the Bad Guys.
But Mr Wolf, Mr Piranha, Mr Snake and Mr Shark are about to change all of that – whether you want them to or not!
The Bad Guys are about to have a very BAD day! Mr. Wolf and his bad buddies have messed with the wrong guinea pig - one who is secretly an evil mad scientist. And the nasty little furball wants revenge! Will they survive? Will they be heroes? And will they ever stop trying to eat each other?!?It's time for the Bad Guys to spring into action!