Harold Humdinger was the main villain in the Paw Patrol one hour special (though released to theaters as a film overseas), Mighty Pups, and one of the primary antagonists in its sequel series Mighty Pups, Super Paws. His ultimate goal in the film was gaining more power and ruling over Adventure Bay, his goals in Super Paws varied from cutting Adventure Bay in half and have the town drift out to sea so that he can rule it as mayor, to freezing everyone in town so that he can take over.
Harold Humdinger is the nephew of Mayor Humdinger, ruler of Foggy Bottom. He is shown to be a child prodigy with genius level intellect, thus making him somewhat arrogant. When a meteor crashed on the beach in Adventure Bay after it collided with Mayor Humdinger's intended rocket to the moon, Harold and the Paw Patrol, who were on hand to investigate after clearing the streets, get bombarded by a blast of energy. As a result, all those involved get super powers. Though jealous at first thinking that he didn't get any powers, he changes his mood when he learns he has the power to create any gadget/machine he wants.
After exposure to the meteor (now recently dubbed the Mighty Meteor), Harold gained the ability to create any machine or gadget he wanted with his energized hands, somewhat like Forge from the X-Men, with the only exceptions being his decision on how to use his powers and he creates his machines with his hands instead of just coming up with them and taking the time to build them like normal. However, he decided to use these powers for evil purposes. First, he attempted to steal the Mighty Meteor from Adventure Bay Town Hall with his uncle, so that way Mayor Humdinger could get super powers too and be the first super powered mayor. However, though they nearly escaped in a super vehicle that Harold created the previous night before the heist, they were defeated by The Mighty Pups. Mayor Humdinger managed to avoid capture, but Harold didn't, at first. Harold escaped from his captors and broke into the Lookout, created a super suit, captured Ryder, locked him up, and successfully stole the Mighty Meteor once again, while also taking his uncle from Foggy Bottom and showing him his accomplishment. After revealing his traitorous ways by going back on his word to give his uncle super powers and revealing his intent of ruling Adventure Bay, Mayor Humdinger reminded him that he captured Ryder, and the pups would stop at nothing to free him. This resulted in Harold creating a giant robot (which looked somewhat and functions like one of the Sentinels from the X-Men comics), powered by the meteor, to defeat and capture the Mighty Pups.
Defeat and eventual returns Edit
Ultimately, Harold was defeated by the clever pups, after crashing back down to Earth with the Lookout after he accidentally sent it into space with his robot. After his defeat, he and the pups realized that their powers were gone, due to the robot draining the remaining energy out of the Mighty Meteor. Harold and Mayor Humdinger were sentenced to clean up the mess they caused. Afterwards, Mayor Humdinger went back to his old mischievous ways and began working with the Kitten Catastrophe Crew again. As for Harold, he went back to Foggy Bottom after losing his powers. As for the Mighty Meteor, it went into the Lookout basement after being drained, to avoid any more robberies. However, after the pups left the space rock in the basement, it began to glow again, indicating that it recharged itself.
The Mighty Pups and Harold returned to their super powered selves in the debut episode of the Paw Patrol sub-series and sequel series to Mighty Pups the Movie, Mighty Pups, Super Paws, which debuted on Nickelodeon on June 28, 2019. While the pups could access their powers from the Mighty Meteor anytime they chose, Harold had his powers temporarily. After his plan to cut Adventure Bay in half and off from the mainland with a high-powered laser failed, his super powered hench-kitties, The Kitten Catastrophe Crew, who gained their powers along with Harold from a fragment of the Mighty Meteor when it crashed, intentionally knocked the fragment into the ocean, after they lost their powers when Harold dropped the fragment, and made it seem that his villain days were over. However, he regained his powers and began a new plan to freeze Adventure Bay solid so that he could take over, much like what Mister Freeze, Killer Frost, Captain Cold, and Icicle would do to any city in the DC universe. However, when he was defeated and managed to escape, he dropped his meteor fragment into the waters of the bay, losing his powers and sending it back to the bottom of the sea, while Harold himself ended up landing in the arctic in his rocket chair.
- Harold's plan to cut Adventure Bay off from the mainland with a high-powered laser and rule it as an island is sort of similar to Lex Luthor's plan to use a missile to break California off from the rest of the USA and sink it into the Pacific Ocean in order to sell land that he purchased. The only difference was the method of separation and the fact that Lex intended to see all the people of California drown after the missile hit.
- According to his uncle, the Kitten Catastrophe Crew are his cousins.