I added a couple of suggestions. I had never heard of 'Toxic Avenger', and Googling it, apparently it had three sequels I've never heard of either. But the web tells me it's a "comedy horror" series, not a superhero series.
I can keep you busy adding super hero movies if you want but I hate to create work for you. Consider Kick Ass, Dr. Strange 1978, The Phantom, The Shadow, Green Hornet, Nick Fury: Agent of Shield 1989 (David Hasselhoff), Condorman 1981, Sky High, Steel, Meteor Man. I have seen them all, good, bad, ugly, sequel. A list of worst movie may really get people talking about the bad ones. Btw, I actuallly liked the Phantom Movie, and Rocketeer.