William Jacob Busey Jr. (born June 15, 1971) is an American actor, musician, and movie 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", Aiden Tanner in the 2014–2016 TV series "", and Sean H. Keyes in the "Predator" franchise.