"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! Mr Wolf has a daring plan for the Bad Guys to do good deeds.