
Seth Gilliam
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).
21 TV shows
TV Shows

Law & Order
NBC

Criminal Minds
CBS

The Blacklist
NBC

The Walking Dead
AMC

CSI: Miami
CBS

Homeland
Showtime

Person of Interest
CBS

Teen Wolf
MTV

The Good Wife
CBS

Elementary
CBS

The Wire
HBO

Law & Order: Criminal Intent
NBC

Oz
HBO

The Cosby Show
NBC

Bull
CBS

Damages
FX

Nurse Jackie
Showtime

The Walking Dead: The Ones Who Live
AMC

Suits LA
NBC

City on a Hill
Showtime

Law & Order: Trial by Jury
NBC