04/04/1959 - Iowa City, Iowa (Estados Unidos)
Apariciones en ST:[]
- TOS: "Miri" (012)(1966) - Niño (no acreditado)
- Film "Star Trek III: The Search for Spock" (1984) - Cadete Foster
- DS9: "Looking for par'Mach in All the Wrong Places" (501)(1998) - Thopok
- DS9: "Rocks and Shoals" (527)(1997) - Remata'Klan
- VOY: "One Small Step" (228)(1999) - Teniente John Mark Kelly
Otros Trabajos Destacados:[]
- Serie "Mission: Impossible" (1988) - Grant Collier
- Serie "Babylon 5" (1996) - "Bill Trainor" en ep. "Severed Dreams"
- Serie "JAG" (1997) - "Capitán Koonan" en ep. "Force Recon"
- Film "Atlantis: The Lost Empire" (2001) - Dr. Joshua Strongbear Sweet (voz)
- Serie "Justice League" (2002/2003) - Vandal Savage
- Serie "JAG" (2005) - "Capitán Koonan" en ep. "Bridging the Gulf"
- Serie "Navy NCIS: Naval Criminal Investigative Service" (2006) - "Capitán Paul Martino" en ep. "Deception"
- Serie "Smallville" (2007/2011) - John Jones / Martian Manhunter
- Serie "Terminator: The Sarah Connor Chronicles" (2008/2009) - Miles Dyson (no acreditado)
- Serie "Doom Patrol" (2019/2023) - Silas Stone