Swamp Thing

When an attempt on Dr. Alec Holland's life leaves him consumed by deadly chemicals and fire, the swamps of Louisiana transform him into a superhuman creature hell-bent on ridding the swamp--and the world--of the evil that men do.

Swamp Thing is a 1990 horror sci-fi movie, starring Mark Lindsay Chapman, Dick Durock, Scott Garrison. It holds an IMDb rating of 6.3/10 from 1,222 votes and runs 30m.