Question: The actor best known for portraying Master of Ceremonies in the musical Cabaret is the son of what actor?
Context: Anthony Ainley (20 August 1932 – 3 May 2004) was an English actor best known for his work on British television and particularly for his role as the Master in "Doctor Who".  He was the fourth actor to play the role of the Master, and the first actor to portray the Master as a recurring role after the death of Roger Delgado in 1973. Mickey Katz (June 15, 1909 – April 30, 1985) was an American comedian and musician who specialized in Jewish humor.  He was the father of actor Joel Grey and grandfather of actress Jennifer Grey. Yanna Darili (Greek:Γιάννα Ντάριλη) is an American model, actress, journalist, producer, television presenter and fitness expert of Greek descent.  She is best known for her fitness segments on ANT1 Greek morning show "Proinos Kafes" as well as host of the first English language ERT show "Hellenic Weekly".  She was master of ceremonies of the pre-game Opening and Closing ceremonies of the Athens 2004 Olympics.  She is also known for her guest appearances on the "Today" show during the Athens 2004 Olympics hosted by Katie Couric. Kevin Colson (born 28 August 1937) is an Australian stage, film and television actor best known for his portrayal of Sir George Dillingham in the musical "Aspects of Love", for which he received a Tony nomination, and his early role as Cliff in the original London production of "Cabaret" opposite Judi Dench.  He was a television presenter and stage actor in Sydney before moving to London.  He left acting for 16 years from 1969, but returned to the stage in 1985. Phillip Kitsing Jeanmarie (born October 6, 1978 in Los Angeles, California) is an American actor best known for portraying Max Cooper, the Blue Shark Ranger in "Power Rangers Wild Force" and as intersex villain Vincent Clarkson—son of Julian Crane and Eve Russell—on the daytime soap opera "Passions" from December 2006 to the series finale in 2008. Artur Józef Andrus (born 27 December 1971) is a Polish journalist, poet, singer-songwriter and cabaret artist.  He is best known for his radio shows at Polskie Radio Program III, and as a master of ceremonies during various TV shows. Mickey Huang Tzu-chiao (; born 30 March 1972), also known as Jiao Jiao, is a Taiwanese comedian, television host, Master of Ceremonies and actor.  He has worked for many television stations, such as ETTV Drama, CTS, and FTV.  He is also a radio DJ, entrepreneur and writer.  He is best known for co-hosting the long-running show "Super Sunday" (超級星期天) in the late 1990s and early 2000s with Chang Hsiao-yen, Harlem Yu and Pu Hsueh-liang.  He became Master of Ceremonies for Golden Bell Awards in 2006 and 2017, Golden Melody Awards in 2012, 2015-2017, Golden Horse Awards in 2015-2016 and Golden Note Composition Awards every year since its inception in 2010.  He also hosted KKBOX Digital Music Awards from 2010-2017 except in 2012. Joel Grey (born Joel David Katz; April 11, 1932) is an American actor, singer, dancer, and photographer.  He is best known for portraying the Master of Ceremonies in both the stage and film versions of the Kander & Ebb musical "Cabaret".  He has won an Academy Award, Tony Award, and Golden Globe Award. Alan Cumming, OBE (born 27 January 1965), is a Scottish-American actor, singer/performer, author, and activist who has appeared in numerous films, television shows, and plays.  His London stage appearances include "Hamlet", the Maniac in "Accidental Death of an Anarchist" (for which he received an Olivier Award), the lead in "Bent", and the National Theatre of Scotland's "The Bacchae".  On Broadway, he has appeared in "The Threepenny Opera", as the master of ceremonies in "Cabaret" (for which he won a Tony Award), "Design for Living" and a one-man adaptation of "Macbeth".  His best-known film roles include his performances in "Emma", "GoldenEye", the "Spy Kids" trilogy, "Son of the Mask," and "X2".  Cumming also introduces "Masterpiece Mystery! " for PBS and appeared on "The Good Wife", for which he has been nominated for three Primetime Emmy Awards, two Screen Actors Guild Awards, two Golden Globe Awards and a Satellite Award.  A filming of his Las Vegas cabaret show, "Alan Cumming Sings Sappy Songs", aired on PBS stations in November 2016. Bret Morrison (5 May 1912 - 25 September 1978) was an American actor best known as the voice of the mysterious crusader for law and order on radio's "The Shadow".  He was also a popular cabaret singer.
Answer: Mickey Katz