Hollywood has looked to superheroes and comic books to inform their stories since the Golden Age of both industries, when characters received serials. Although Marvel and DC's properties have dominated the genre on film, there have been plenty of independent and alternate superhero stories just as good. In fact, some of these films went so far as to alter the direction of superhero cinema, and quite often for the better.
Source:https://www.cbr.com/great-superhero-movies-not-marvel-dc/