Question: Who is famously known for his roles in The Walking Dead episode entitled Strangers and his role in Oz?
Context: The Walking Dead: Survival Instinct is a single-player post apocalyptic first-person shooter video game developed by Terminal Reality and published by Activision.  It is based on and canon to "The Walking Dead" television series, in contrast to the video game by Telltale Games, which is based on and canon to the comics.  "The Walking Dead: Survival Instinct" acts as a prequel to the TV series; it is set in the Georgia countryside and focuses on Daryl and Merle Dixon as they make their way to Atlanta during the early days of the zombie apocalypse.  The critical reception for "The Walking Dead: Survival Instinct" was received poorly, with criticisms mainly directed to the game's graphics, control, and plot. Fear the Walking Dead: Flight 462 is a 16-part web series based on the television series "Fear the Walking Dead".  The series premiered on October 4, 2015, on AMC's official website.  It also aired as promos during "The Walking Dead" season 6.  The web series tells the story of a group of passengers aboard a commercial airplane during the earliest moments of the outbreak.  Over the course of the series, the plane and the lives of its passengers are put in jeopardy once they discover an infected traveler.  Two of its characters, Alex and Jake, are introduced in "Fear the Walking Dead" season 2, episode 3 "Ouroboros". The Walking Dead (also known as The Walking Dead: The Game and The Walking Dead: Season One) is an episodic interactive drama graphic adventure survival horror video game developed and published by Telltale Games.  Based on "The Walking Dead" comic book series, the game consists of five episodes, released between April and November 2012.  It is available for Android, iOS, Kindle Fire HDX, Microsoft Windows, Mac OS X, PlayStation 3, PlayStation Vita, Xbox 360, PlayStation 4 and Xbox One.  The game is the first of "The Walking Dead" video game series published by Telltale. Mark Matkevich (born June 19, 1978) is an American art gallerist and actor best known for appearing as Drue Valentine in 17 episodes of the television program "Dawson's Creek".  He also appeared in the hit romantic comedy, 'Sweet Home Alabama', and played Patrick Dempsey's best friend 'Tom Darovsic'.  Matkevich has also had recurring roles on "Ed" and "Joan of Arcadia".  He played Dan, a medical student, in an episode of "Tru Calling" (episode entitled "Haunted") and had a guest star role in Season 5 (series five) of "NCIS".  He has appeared in the Showtime show "Dexter" with Michael C. Hall.  He also was a guest star on "Drake & Josh" in an episode entitled "Guitar," where he plays rock guitarist Devin Malone for whom Drake substitutes in a concert after Josh accidentally breaks the hand of Mark Matkevich's character. The Walking Dead: A New Frontier (also known as The Walking Dead: Season Three) is an episodic graphic adventure game based on Robert Kirkman's "The Walking Dead" comic book series developed by Telltale Games.  It is Telltale's third season of its "The Walking Dead" series, with the first two episodes released on December 20, 2016, and a retail season pass disc edition planned for release on February 7, 2017.  The game employs the same narrative structure as the past seasons, where player choice in one episode will have a permanent impact on future story elements.  The player choices recorded in save files from the first two seasons and the additional episode "400 Days" carry over into the third season.  Clementine (voiced by Melissa Hutchison), who was the player's companion during the first season and the player-character in season two returns as a player-character along with another player-character, Javier "Javi" Garcia (voiced by Jeff Schine). The Walking Dead: Rise of the Governor is a post-apocalyptic horror novel written by Robert Kirkman and Jay Bonansinga and released October 11, 2011.  The novel is a spin-off of "The Walking Dead" comic book series and explores the back-story of one of the series' most infamous characters, The Governor.  "Rise of the Governor" is the first in a trilogy of novels.  "The Walking Dead"'s fourth season utilizes plots from the novel, the Chalmers family in particular. The Walking Dead: Road to Survival is a role-playing game for Android and iOS, based on the comic book series "The Walking Dead" by Robert Kirkman, as well as the story of "The Walking Dead" TV series writer Jay Bonansinga.  "Road to Survival" was developed by Scopely and co-created with IUGO Mobile Entertainment. The Walking Dead: Season Two is an episodic interactive drama graphic adventure game based on "The Walking Dead" comic book series developed by Telltale Games.  It is the sequel to "The Walking Dead", with the episodes released between December 2013 and August 2014, and a retail collector's disc edition planned at the conclusion of the season.  The game employs the same narrative structure as the first season, where player choice in one episode will have a permanent impact on future story elements.  The player choices recorded in save files from the first season and the additional episode "400 Days" carry over into the second season.  Clementine, who was the player's companion during the first season, is the player-character in "Season Two. Seth Gilliam (born November 5, 1968) is an American actor.  He is best known for his portrayals of Ellis Carver on "The Wire", Clayton Hughes on "Oz", Dr. Alan Deaton on "Teen Wolf", and Father Gabriel Stokes on "The Walking Dead". "Strangers" is the second episode of the fifth season and 53rd episode overall of the post-apocalyptic horror television series "The Walking Dead", which aired on AMC on October 19, 2014.  The episode was written by series creator Robert Kirkman and directed by David Boyd.  In the episode, Rick Grimes (Andrew Lincoln)'s group encounters a priest, Father Gabriel Stokes (Seth Gilliam), who provides them solace in his church, while Rick contemplates Abraham Ford's (Michael Cudlitz) proposition to escort Dr. Eugene Porter (Josh McDermitt) to Washington, D.C. to cure the walker virus.
Answer: Seth Gilliam