Darkman

A decade before Sam Raimi brought a certain web-head to the big screen, he created his own superhero in this 1990 film. It stars Liam Neeson as Peyton Westlake, a scientist who has invented synthetic skin that, at its current stage of development, will disintegrate after 99 minutes of exposure to sunlight. His girlfriend, Julie (Frances McDormand), runs afoul of gangster Robert G. Durant (Larry Drake) and his thugs, who have him nearly killed. Peyton, now horrifically burned, uses his own invention against the crooks as his new alter-ego, Darkman.

Example of:
Superhero Horror