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...even if it costs him his life.
| Actor | Role |
|---|---|
 Louis JourdanArcane | Arcane |
 Adrienne BarbeauAlice Cable | Alice Cable |
 Ray WiseDr. Alec Holland | Dr. Alec Holland |
 David HessFerret | Ferret |
 Nicholas WorthBruno | Bruno |
 Don KnightRitter | Ritter |
 Al RubanCharlie | Charlie |
 Dick DurockSwamp Thing | Swamp Thing |
| BBen BatesArcane Monster | Arcane Monster |
| NNannette BrownDr. Linda Holland | Dr. Linda Holland |
| RReggie BattsJude | Jude |
 Mimi CravenArcane's Secretary | Arcane's Secretary |
 Karen PriceArcane's Messenger | Arcane's Messenger |
| BBill EricksonYoung Agent | Young Agent |
| DDov GottesfeldCommando | Commando |
| TTommy MaddenLittle Bruno | Little Bruno |