Seth Gilliam
Acting • Born 1968-11-05
Biography
Seth Gilliam (November 5, 1968) is an American screen and stage actor. He is most known as Father Gabriel on AMC's post-apocalyptic series The Walking Dead, first appearing in Season 5. He is also known for his HBO television roles, first as corrections officer-turned-prisoner Clayton Hughes on Oz, and later as Baltimore police detective promoted to Sergeant, Ellis Carver on The Wire. On both of these series, he co-starred with Lance Reddick and J.D. Williams. Another of his major recurring roles was on the TV series Teen Wolf as Dr. Alan Deaton. He had a recurring role during the seventh season of The Cosby Show as Aaron Dexter (boyfriend of Erika Alexander's character Pam), Law and Order: Criminal Intent, and Law and Order: Trial by Jury. He's had a number of guest roles in other shows such as CSI: Miami, Nurse Jackie, Skins, Person of Interest, The Good Wife, and Bull. His feature film credits include his role as Sergeant Steven Altameyer in Courage Under Fire (1996) and Private Sugar Watkins in the action movie Starship Troopers (1997). His other films include Personal Velocity (2002), Did You Hear About the Morgans? (2009), and Still Alice (2014).
Filmography
50 credits
Starship Troopers
Movie • 1997
Private Sugar Watkins
The Great New Wonderful
Movie • 2005
Clayton
Change in the Air
Movie • 2018
Officer Payne
Teen Wolf: The Movie
Movie • 2023
Dr. Alan Deaton
Sympathetic Details
Movie • 2008
Raymond
The Wire: The Last Word
Movie • 2007
Self
The Wire Odyssey
Movie • 2007
Self
Punks
Movie • 2000
Marcus
The Zombie Wedding
Movie • 2023
Reverend Harry Crump
In the Eyes of a Stranger
Movie • 1992
Jefferson in Paris
Movie • 1995
James Hemings
Tapping the Wire
Movie • 2007
Self
Betrayed
Movie • 2010
Roger Waite
Did You Hear About the Morgans?
Movie • 2009
U.S. Marshal Lasky
Tar
Movie • 1996
Tyrone
Still Alice
Movie • 2014
Frederic Johnson
Joey Breaker
Movie • 1993
Jeremy Brasher
Personal Velocity
Movie • 2002
Vincent
Courage Under Fire
Movie • 1996
Stephen Altameyer
The Lady of the Lake
Movie • 2024
Adam Schultz
The People v. Leo Frank
Movie • 2009
Jim Conley
Assault at West Point: The Court-Martial of Johnson Whittaker
Movie • 1994
Cadet Johnson C. Whittaker
Silver Lake
Movie • 2018
Jeff
The Skinny
Movie • 2012
Testing Van Doc
Police State
Movie • 2018
Officer Grady
Heading Home
Movie • 1995
Willie
Mr. Wonderful
Movie • 1993
Emergency Room Doctor (unconfirmed)
Ride or Die
Movie • 2025
Creon
Stakeout (Short)
Movie
The Wire
TV • 2002
Ellis Carver
CSI: Miami
TV • 2002
Aaron Nolan
The Cosby Show
TV • 1984
Aaron Dexter
Law & Order: Trial by Jury
TV • 2005
Terence Wright
The Blacklist
TV • 2013
Larry Whitaker
Teen Wolf
TV • 2011
Alan Deaton
Law & Order
TV • 1990
Michael´s Attorney
The Walking Dead
TV • 2010
Gabriel Stokes
Law & Order
TV • 1990
Babatunde Amoda
The Good Wife
TV • 2009
Jacob Rickter
The Walking Dead: The Ones Who Live
TV • 2024
Gabriel Stokes
Elementary
TV • 2012
Dr. Ira Wallace
Person of Interest
TV • 2011
Des Franklin
Bull
TV • 2016
Dr. Poulson
Law & Order: Criminal Intent
TV • 2001
Detective Daniels
City on a Hill
TV • 2019
Jasper Fields
Criminal Minds
TV • 2005
Lyle Johnson
Suits LA
TV • 2025
Dean Harris
Homeland
TV • 2011
Chaplin
Damages
TV • 2007
Mark Waters
Oz
TV • 1997
Clayton Hughes