The Toxic Avenger is tricked into traveling to Tokyo to search for his estranged father, leaving Tromaville open to complete domination by an evil corporation.
The Toxic Avenger Part III: The Last Temptation of Toxie(1989)
Toxie finds he has nothing to do as a superhero, as he has ridden his city of evil. He decides to go to work for a major corporation, which he discovers may be the evilest of all his adversaries.