Swamp Thing

Swamp Thing is a movie starring Louis Jourdan, Adrienne Barbeau, and Ray Wise. After a violent incident with a special chemical, a research scientist is turned into a swamp plant monster.
Mutated by his own secret formula, Dr. Alec Holland becomes Swamp Thing - a half human, half plant superhero who will stop at nothing to rescue government agent Alice Cable and defeat his evil arch nemesis Arcane... even if it costs him his life.