"I wish I'd had these books as a kid. Hilarious!" -- Dav Pilkey, creator of Captain Underpants and Dog Man

They sound like Bad Guys, they look like Bad Guys . . . and they even smell like 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! Buckle up for the funniest, naughtiest and coolest series you'll ever read-it's time to meet the...

"I wish I'd had these books as a kid. Hilarious!" -- Dav Pilkey, creator of Captain Underpants and Dog Man

They sound like Bad Guys, they look like Bad Guys . . . and they even smell like 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! Buckle up for the funniest, naughtiest and coolest series you'll ever read-it's time to meet the Bad Guys -- NOW IN FULL COLOR!