Swamp Thing
(1990)| Acteur / Actrice | Karakter |
| Dick Durock | Swamp Thing |
| Mark Lindsay Chapman | Dr. Anton Arcane |
| Carrell Myers | Tressa Kipp |
| Scott Garrison | Will Kipp |
| Kevin Quigley | Graham |
| Jesse Zeigler | Jim Kipp |
| Anthony Galde | Obo Haritson |
| Kari Wuhrer | Abigail |
| William Whitehead | Dr. Holllister |
| Janet Julian | Doctor Ann Fisk |