"Swamp Thing" is Cyrus "The Virus" Grissom's pilot and the quaternary antagonist of Con Air. He is played by actor M.C. Gainey. His name is the same as the DC Comics superhero Swamp Thing.
| Con Air Characters | |
|---|---|
| Heroes | Cameron Poe - Vince Larkin |
| Villains | Cyrus "The Virus" Grissom - Nathan "Diamond Dog" Jones - Francisco Cindino |
| Allies | Mike "Baby-O" O'Dell - Sally Bishop - Duncan Malloy |
| Henchmen | William "Billy Bedlam" Bedford - Johnny "Johnny-23" Baca - Swamp Thing - Pinball |
| Other characters | Garland Greene - Tricia Poe - Casey Poe |