Harold the Hero (Game)

Harold the Hero was a very early game in the Mario series, coming out almost right after Donkey Kong Jr. It is one of the few games where Mario is the antagonist. This game shows a darker side to Mario, considering he blows up Harold's house and kidnaps his dog. It's an arcade game.

Plot:
Harold is in his house when Mario kidnaps his dog and blows up his house. Harold goes on a quest to save his dog. Once he defeats Mario, Mario escapes.