English actor Malcolm McDowell made his screen debut as Mick Travis in the 1968 satire If.... and came to international prominence three years later with his portrayal of Alex DeLarge in A Clockwork Orange (1971). His subsequent credits include The Raging Moon (1971), O Lucky Man! (1973), Voyage of the Damned (1976), Time After Time (1979), Caligula (1979), Cat People (1982), Blue Thunder (1983), The Caller (1987), Star Trek Generations (1994), Tank Girl (1995), Mr. Magoo (1997), Gangster No. 1 (2000), I Spy (2002), I'll Sleep When I'm Dead (2003), The Company (2003), Doomsday (2008), Easy A (2010), The Artist (2011), and Bombshell (2019). He also played Dr. Samuel Loomis in the 2007 remake of Halloween and its sequel, Halloween II (2009).

Outside film, McDowell has appeared in recurring roles on Entourage (2005–2011) and Heroes (2006–2007), and had starring roles on Franklin & Bash (2011–2014) and Mozart in the Jungle (2014–2018). He has played Patrick "Pop" Critch on the Canadian series Son of a Critch since 2022. He has also voiced characters in various animated shows, films and video games, such as Superman: The Animated Series (1996–1999), Metalocalypse (2007–2012), Bolt (2008), Fallout 3 (2008), The Elder Scrolls franchise (2014–2021), and Call of Duty: Black Ops III (2016).