Nato/a il September 30, 1946 · St. Louis, Missouri, USA
Filmography
| Role | Title | Year | Character |
|---|---|---|---|
| Writer | Alien | 1979 | |
| Writer | Alien | 1979 | |
| Writer | Alien: Covenant | 2017 | |
| Writer | Alien vs. Predator | 2004 | |
| Writer | Aliens vs. Predator 2 | 2007 | |
| Writer | Total Recall - Atto di forza | 1990 | |
| Writer | Total Recall - Atto di forza | 2012 | |
| Writer | Il ritorno dei morti viventi | 1985 | |
| Director | Il ritorno dei morti viventi | 1985 | |
| Writer | Space Vampires | 1985 | |
| Writer | Tuono blu | 1983 | |
| Writer | Screamers – Urla dallo spazio | 1995 | |
| Actor | Dark Star | 1974 | |
| Writer | Dark Star | 1974 | |
| Writer | Morti e sepolti | 1981 | |
| Writer | Invaders | 1986 | |
| Director | The Resurrected | 1991 | |
| Writer | Alien: Containment | 2019 | |
| Writer | Hemoglobin - creature dall'inferno | 1997 | |
| Writer | Alien: Ore | 2019 | |
| Crew | Alien: Ore | 2019 | |
| Writer | Alien: Specimen | 2019 | |
| Writer | Alien: Harvest | 2019 | |
| Writer | Alien: Alone | 2019 | |
| Writer | Alien: Night Shift | 2019 |