David Graham (actor) in which he also provided Mechanoid voices) and "The Daleks' Master Plan" (1965–66). He performed in person as barman Charlie in "The Gunfighters" (1966) and as time-travel scientist Professor Kerensky in "City of Death" (1979). Graham also provided the regular voices of Gordon Tracy, Brains, Parker and Kyrano for the Supermarionation TV series "Thunderbirds" (1965–66), as well as its film sequels: "Thunderbirds Are Go" (1966) and "Thunderbird 6" (1968). Other credits from his association with "Thunderbirds" producer Gerry Anderson include "Four Feather Falls" (1960), "Supercar" (1961–62), "Fireball XL5" (1962–63), "Stingray" (1964–65) and "The Secret Service" (1969). Graham has also appeared
Joker (character) in which he is voiced by John DiMaggio). In 2012, Michael Emerson voiced the character in a two-part animated adaptation of "". Jared Leto portrayed the Joker in "Suicide Squad" (2016), and Zach Galifianakis voiced the character in "The Lego Batman Movie" (2017). In August 2017, Warner Bros. revealed plans for a standalone film based on the Joker, directed by Todd Phillips and produced by Martin Scorsese. Joaquin Phoenix portrays the character in "Joker", which is scheduled for release in 2019. The Joker has also been featured in video games. Hamill returned to voice the character in 2009's critically acclaimed