Question: Who is famously known for his roles in The Walking Dead episode entitled Strangers and his role in Oz?

full_context: Document 1: Clear (The Walking Dead): "Clear" is the twelfth episode of the third season and 31st episode overall of the post-apocalyptic horror television series "The Walking Dead", which originally aired on AMC in the United States on March 3, 2013. The episode was written by Scott M. Gimple and directed by Tricia Brock. In this episode, Rick Grimes (Andrew Lincoln), Carl Grimes (Chandler Riggs), and Michonne (Danai Gurira) go on a supply run to Rick's hometown, initially to his old police station, for more weapons for the upcoming battle against The Governor. This episode marks the return of Morgan Jones (Lennie James), who was last seen in the series pilot episode, "Days Gone Bye".
Document 2: Ethan Suplee: Ethan Suplee (born May 25, 1976) is an American film and television actor best known for his roles as Seth Ryan in "American History X", Louie Lastik in "Remember the Titans", Frankie in "Boy Meets World", Randy Hickey in "My Name Is Earl", Toby in "The Wolf of Wall Street", and his roles in Kevin Smith films.
Document 3: Seth Morris: Seth Morris (born May 21, 1970) is an American actor, comedian, and writer known for his recurring roles on programs such as "Go On", "Happy Endings", "The Hotwives of Orlando", "Kroll Show", and "Childrens Hospital".
Document 4: Joe Gilgun: Joseph William Gilgun (born 9 March 1984) is an English actor known for several roles, including that of Eli Dingle in ITV's "Emmerdale", "Woody" in the film and TV spin-offs" This Is England" (2006–15), and Rudy Wade in E4's "Misfits". He currently appears as a main character in the AMC television adaption of the popular Vertigo comic "Preacher", the charismatic Irish vampire Cassidy.
Document 5: Chad Coleman: Chad L. Coleman (born September 6, 1974) is an American actor. He is best known for portraying Dennis "Cutty" Wise on the HBO crime drama series "The Wire" (2004–2008), voicing Coach in the video game "Left 4 Dead 2", and portraying Tyreese Williams on the AMC post-apocalyptic horror series "The Walking Dead" (2012–2015). He currently stars in the Syfy series "The Expanse" as Fred Johnson, a.k.a. "The Butcher of Anderson Station", and starred in History Channel's re-imagining of the miniseries "Roots" airing the week of May 30, 2016.
Document 6: The Walking Dead (TV series): The Walking Dead is an American post-apocalyptic horror television series developed by Frank Darabont for AMC that is based on the eponymous comic book series of the same name by Robert Kirkman, Tony Moore, and Charlie Adlard. Andrew Lincoln plays the show's lead character, sheriff's deputy Rick Grimes, who awakens from a coma discovering a world overrun by zombies, commonly referred to as "walkers". Grimes reunites with his family and becomes the leader of a group he forms with other survivors. Together they struggle to survive and adapt in a post-apocalyptic world filled with walkers and opposing groups of survivors, who are often more dangerous than the walkers themselves. Much of the series takes place in and around Atlanta, Georgia, and Alexandria, Virginia.
Document 7: Four Walls and a Roof: "Four Walls and a Roof" is the third episode of the fifth season and 54th episode overall of the post-apocalyptic horror television series "The Walking Dead", which aired on AMC on October 26, 2014. The episode was written by Angela Kang and Corey Reed, and directed by Jeffrey F. January. In the episode, the group of Rick Grimes (Andrew Lincoln) prepares for a showdown with Gareth (Andrew J. West) and his group of Terminus residents. Meanwhile, following his leg being amputated and eaten by Gareth's group, Bob Stookey (Lawrence Gilliard Jr.) is on the brink of death from a walker bite sustained in the previous episode.
Document 8: Made to Suffer: "Made to Suffer" is the eighth episode and mid-season finale of the third season, and 27th episode overall of the post-apocalyptic horror television series "The Walking Dead". It was directed by Billy Gierhart and written by Robert Kirkman, and aired on AMC in the United States on December 2, 2012. In this episode, Rick (Andrew Lincoln), Daryl (Norman Reedus), Michonne (Danai Gurira), and Oscar (Vincent Ward) enter Woodbury in search of Glenn (Steven Yeun) and Maggie (Lauren Cohan). Meanwhile, a new group of survivors encounters the prison.
Document 9: Gareth (The Walking Dead): Gareth is a fictional character from the American television series "The Walking Dead" portrayed by Andrew J. West. Gareth is based on Chris from the comic book series of the same name, according to West himself. Gareth is introduced at the end of season 4. He is initially introduced as the welcoming yet mysterious leader of Terminus. However, his true motivations are revealed after Gareth forces Rick Grimes and his fellow survivors into train car A. At the beginning of season 5, it is revealed Gareth and his entire community are cannibals. As the result of the actions by Carol Peletier, the group escapes, leaving many casualties of Terminus. Gareth, however, leads the remaining survivors to try to hunt down Rick's group and eat them.
Document 10: Shea Whigham: Franklin Shea Whigham Jr. (born January 5, 1969) is an American actor. He portrayed Elias "Eli" Thompson in the HBO drama series "Boardwalk Empire", and also had supporting roles in and True Detective.
Document 11: The Walking Dead (season 5): The fifth season of "The Walking Dead", an American post-apocalyptic horror television series on AMC, premiered on October 12, 2014, and concluded on March 29, 2015, consisting of 16 episodes. Developed for television by Frank Darabont, the series is based on the eponymous series of comic books by Robert Kirkman, Tony Moore, and Charlie Adlard. The executive producers were Kirkman, David Alpert, Scott M. Gimple, Greg Nicotero, Tom Luse, and Gale Anne Hurd, with Gimple as showrunner for the second consecutive season. The fifth season received widespread critical acclaim by critics. It was nominated for multiple awards and won three, including Best Syndicated/Cable Television Series for the third consecutive year, at the 41st Saturn Awards.
Document 12: Seth Gilliam: 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".
Document 13: Seth Green: Seth Benjamin Green (born Seth Benjamin Gesshel-Green; February 8, 1974) is an American actor, voice artist, comedian, producer, writer, and director. Green is the creator, executive producer, writer, director and is the most-frequent voice on Adult Swim's "Robot Chicken". He directed many of the "Robot Chicken" specials including "" and "DC Comics Special". His feature films include "Airborne", "The Italian Job", "Party Monster", "Can't Hardly Wait", "Without a Paddle" and the "Austin Powers" series. Green is also known for his role as Chris Griffin on Fox's "Family Guy" and previously as Daniel "Oz" Osbourne in "Buffy the Vampire Slayer", and "Greg the Bunny". He voices Lieutenant Gibbs in "Titan Maximum" and Jeff "Joker" Moreau in the "Mass Effect" video game series. Green has appeared in movies such as "Rat Race", "America's Sweethearts", "Old Dogs", as a child in Woody Allen's "Radio Days", and in the horror films "Idle Hands" and "Stephen King's It".
Document 14: Remember (The Walking Dead): "Remember" is the twelfth episode of the fifth season and 63rd episode overall of the post-apocalyptic horror television series "The Walking Dead", which aired on AMC on March 1, 2015. It was written by Channing Powell and directed by Greg Nicotero. In the episode, the group enters the Alexandria Safe-Zone and struggles to adapt to the community's normality and lifestyle, as well as distrusts their environment. Several group members are interviewed by the shrewd former congresswoman, Alexandria leader, Deanna Monroe (Tovah Feldshuh), as they are given houses to live in.
Document 15: Strangers (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.
ground_truth: Seth Gilliam