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). Seth Gilliam(1968년생, Washington Heights, New York, USA) 는 배우로, 대표작으로 스틸 앨리스, Heading Home, Stakeout (Short)가 있으며, 그 외에도 로 앤 오더, 크리미널 마인드, 워킹 데드, 블랙리스트, 로 앤 오더: 크리미널 인텐트, 퍼슨 오브 인터레스트, CSI: 마이애미, 굿 와이프, 홈랜드, 엘리멘트리, 더 와이어, 틴 울프 등 다양한 작품에 출연했다. (오뜨랑에서 실시간으로 번역된 한글 프로필도 확인할 수 있어요) 2025년 Ride or Die에서 Creon 역을 맡았다. 2025년 슈츠 LA에서 Dean Harris 역을 맡았다. 2024년 The Lady of the Lake에서 Adam Schultz 역을 맡았다.