Mayor Humdinger is the main “bad guy” in the PAW Patrol series. He’s not a fan of the pups, and while he’s often causing mischief, it’s usually the PAW Patrol who has to bail him out.

"When Mayor Humdinger clones Robo Dog, chaos ensues across the world, so it's up to Ryder and the Paw Patrol to stop Mayor Humdinger, rescue Robo Dog, and learn what it means to be a top hero." ...

The PAW Patrol is on a roll! When their biggest rival, Humdinger, becomes Mayor of nearby Adventure City and starts wreaking havoc, Ryder and everyone’s favorite heroic pups kick into high gear ...