Seth Gilliam

Gilliam has had a number of recurring roles on television, including during the seventh season of The Cosby Show as Aaron Dexter, boyfriend of Erika Alexander's character, and as Alan Deaton on Teen Wolf. His most prominent role, however, has been on The Wire. In 2008, Gilliam attracted attention for criticizing the show being overlooked for Emmy nominations, despite its critical success. He has also had a number of guest roles in other shows such as CSI: Miami, Nurse Jackie, Skins, Person of Interest, and The Good Wife. His film credits include Private Sugar Watkins in the 1997 action film Starship Troopers and Sergeant Steven Altameyer in the 1996 film Courage Under Fire.

Gilliam has also acted on stage, including playing Prince Edward in a 1993 production of Richard III, and as the lead in the Commonwealth Shakespeare Company's 2010 production of Othello. He has stated that he prefers acting on the stage: "It's a lot more fun to do. There is instant communication with the audience. An actor can tell whether or not he or she is connecting with an audience or whether they understand what's going on."

On 5 May 2014, Gilliam was cast as Gabriel Stokes in the fifth season of AMC's The Walking Dead.