Alan Wray Tudyk (/ˈtjuːdɪk/ TEW-dik; born March 16, 1971) is an American actor. His film work includes roles in 28 Days (2000), A Knight's Tale (2001), Dodgeball: A True Underdog Story (2004), voicing Sonny in I, Robot (2004), and 3:10 to Yuma (2007). In 2010, he starred with Tyler Labine in the black comedy horror film Tucker & Dale vs. Evil. He has also appeared in the films Transformers: Dark of the Moon (2011), 42 (2013), Maze Runner: The Scorch Trials (2015), and Trumbo (2015).

Tudyk is known for his television role as Wash on the space Western drama series Firefly with Nathan Fillion (2002–2003). The show ran for one season and developed a cult following after the series aired. He reprised the role in the 2005 continuation film Serenity based on the events of the final episode of the series. His other television roles include the 2007 English black comedy film Death at a Funeral, the sitcom Arrested Development (2005, 2013, 2019), the science fiction series Dollhouse (2009–2010), superhero animated series Young Justice (2010–2013, 2019), and various voice roles on the animated series American Dad! (2011–present). From 2011 to 2014, he played Dr. Noah Werner on the sitcom Suburgatory with Jeremy Sisto. He also starred in Cartoon Network's television comedy Newsreaders (2014–2015), the animated series Star vs. the Forces of Evil (2015–2019), voiced Dangerboat on The Tick (2017–2019), played K-2SO in the 2016 film Rogue One, and voiced Eric Morden / Mr. Nobody on the series Doom Patrol (2019). Since 2019, he has voiced The Joker and Clayface in the DC Universe/HBO Max series Harley Quinn. Tudyk played Dr. Harry Vanderspeigle in the Syfy series Resident Alien, and voiced Optimus Prime in the animated series Transformers: Earthspark.

Early life
Tudyk was born in El Paso, Texas, the son of Betty Loyce (née Wiley) and Timothy Nicholas Tudyk. He is of Polish, German, French, and English ancestry. Tudyk was raised in Plano, Texas, a suburb of Dallas, where he attended Plano Senior High School. He had a brief experience as a stand-up comic before quitting after an angry audience member threatened to kill him. Tudyk studied drama at the Methodist-affiliated Lon Morris College in Jacksonville, Texas, where he won the Academic Excellence award for drama. While in college, he played Beaver Smith in an eastern New Mexico summer stock theater production of Billy the Kid. Tudyk entered Juilliard but left in 1996 before earning a degree.