William Jacob Busey Jr. (born June 15, 1971) is an American actor, musician, and film producer. Among his most prominent roles have been serial killer Johnny Bartlett in 1996's The Frighteners, Ace in 1997's Starship Troopers, Kyle in 2001's Tomcats, and Aiden Tanner in the 2014–2016 TV series From Dusk till Dawn: The Series.
Busey was born in Los Angeles, and raised in Malibu, California, the son of photographer Judy Busey, and actor Gary Busey. Busey spent his childhood on film sets and touring with bands in which his father sometimes played, such as Leon Russell, Willie Nelson and Little Feat. He began considering his career choices at the age of five when he took up the two hobbies that grew into professions: acting and playing drums.
Busey's motion picture debut was in the 1978 film Straight Time with his father Gary and Dustin Hoffman. His two most notable appearances are as the murderous religious fanatic opposite Jodie Foster in Contact and as smart-mouthed soldier Ace Levy in Starship Troopers. He appeared in H. G. Wells' War of the Worlds, one of three 2005 film adaptations of the novel by H. G. Wells, alongside C. Thomas Howell. Additionally, he has had major roles in Tomcats opposite Jerry O'Connell and Shannon Elizabeth, in James Mangold's thriller Identity, with C. Thomas Howell in The Hitcher II, Michael J. Fox in Peter Jackson's The Frighteners and Road House 2. Busey played the role of "Backfire" in Patrick Durham's movie Cross which was released directly to DVD and download in May 2011, and stars in the independent film Don't Pass Me By.