Question: Alfie Allen played Theon Greyjoy on which show?

Context:
John Allen (baseball)
John Marshall Allen (October 27, 1890 – September 24, 1967) was a professional baseball player whose career spanned three seasons, including one in Major League Baseball with the Baltimore Terrapins (1914).
 He played the pitcher position.
 Allen played one game in the majors and gave-up four runs, all earned.
 Allen also played in the minor leagues with the Class-C Lynchburg Shoemakers (1912) and the Class-D Hagerstown Terriers (1917).
 In the minors, Allen compiled a record of 6–8 in 16 games.
 He also managed one season in 1945 with the Greensboro Patriots.
 Allen served in World War I.
Theon Greyjoy
Theon Greyjoy is a fictional character in the "A Song of Ice and Fire" series of fantasy novels by American author George R. R. Martin, and its television adaptation "Game of Thrones".
 Theon is the son and heir of Balon Greyjoy, taken as a ward by Lord Eddard Stark following Balon's failed rebellion.
Alfie Allen
Alfie Allen (born 12 September 1986) is an English actor.
 He is best known for portraying Theon Greyjoy in the HBO series "Game of Thrones" since 2011.
Keith Allen (actor)
Keith Howell Charles Allen (born 2 September 1953) is a Welsh actor, comedian, musician, singer-songwriter, artist, author, and television presenter.
 He is the father of singer Lily Allen and actor Alfie Allen, and brother of actor and director Kevin Allen.
Close to the Enemy
Close to the Enemy is a British period drama miniseries set in the late 1940s in London.
 It is written and directed by Stephen Poliakoff, starring Jim Sturgess, Freddie Highmore, Charlotte Riley, Phoebe Fox, Alfred Molina, Lindsay Duncan, August Diehl, Alfie Allen, Angela Bassett, Antje Traue, Lily G and Robert Glenister.
 It premiered in the United Kingdom on BBC Two on 10 November 2016.
Alfie (Lily Allen song)
"Alfie" is a song by British recording artist Lily Allen from her debut studio album, "Alright, Still" (2006).
 Written by Allen and Greg Kurstin, the song was released as the fourth and final single from the album, on 5 March 2007, by Regal Recordings.
 In the United Kingdom, it was marketed as a double A-side single, along with "Shame for You".
 While the melody incorporates a sample of Sandie Shaw's "Puppet on a String", the lyrics directly describe Allen's real life younger brother, actor Alfie Allen, criticising him for his lazy behaviour.
Pete Allen (baseball)
Jesse Hall "Pete" Allen (May 1, 1868 – April 16, 1946) was a professional baseball player whose career spanned two seasons, including a part of one in Major League Baseball with the Cleveland Spiders (1893).
 Allen played one game in the majors and went hitless four at-bats.
 In that game, Allen played catcher.
 He also played in the minor leagues with the Binghamton Bingoes (1893) and the New Castle, Pennsylvania baseball team (1895).
 During Allen's time in the minors, he played catcher and outfielder.
 After his baseball career was over, Allen enrolled in the University of Pennsylvania School of Medicine where he graduated in 1897.
 Soon after, Allen began practicing medicine, specializing in proctology.
Plastic (film)
Plastic is a British-American action comedy-crime film directed by Julian Gilbey and co-written by Will Gilbey and Chris Howard.
 The film stars Ed Speleers, Will Poulter, Alfie Allen, Sebastian de Souza and Emma Rigby.
Marie Antoinette syndrome
Marie Antoinette syndrome is a sudden whitening of the hair.
 The event that named the syndrome was the observation that the hair of Queen Marie Antoinette of France turned stark white after her capture following the ill-fated Flight to Varennes during the French Revolution.
 Witnesses have alleged that Antoinette's hair suddenly turned white on three separate occasions.
 In the novel 'One hundred and One Dalmatians', by Dodie Smith, after the Dalmatians destroy Cruella de Vil's stock of furs, the shock renders her black hair white (and her white hair green).
 In Victor Hugo's novel 'Les Miserables' Jean Val-Jean's hair also goes pure white after the trauma of appearing in court in Arras.
 Other examples can be found in George R.R. Martin's "A Song of Ice and Fire" series, where the character Theon Greyjoy's hair turns white and brittle from extended brutal torture.
Sled Allen
Fletcher Manson "Sled" Allen (August 23, 1886 – October 16, 1959) was a professional baseball catcher and manager.
 Allen was also a sports promoter after retiring from baseball.
 Allen played a total of nine seasons in professional baseball, including a part of one in Major League Baseball with the St. Louis Browns (1910).
 Over his major league career, Allen batted .130 with three hits in 14 games played.
 Allen also played in the minor leagues with the Class-C Enid Railroaders (1908–1909), the Class-A Louisville Colonels (1910) and the Class-B Houston Buffaloes (1912–1916).
 During his minor league career, Allen compiled a .210 batting average with 465 hits, 63 doubles, 15 triples and five home runs in 748 games.
 Allen was a manager in the minor leagues for the Class-B Houston Buffaloes (1911), the Class-D Ranger Nitros (1921), the Class-D Lubbock Hubbers (1923) and the Class-A Amarillo Texans (1928).
 Allen is the father of country music singer Terry Allen.

Answer: Game of Thrones