King has provided effects for motion pictures since the late 1990s. He created computer special effects for the films Tin Cup (featuring Richard Lineback), Space Jam (featuring Brad William Henke), and Starship Troopers (starring Dina Meyer and Clancy Brown), after which he began working at Walt Disney Studios. While at Disney, King worked on special and digital effects for several animated feature-length productions, including Recess: School's Out (featuring the voices of Diedrich Bader, Clancy Brown, Ron Glass, Tony Jay, Clyde Kusatsu, and Andrea Martin), The Tigger Movie (with the voice of John Fiedler), and The Little Mermaid II: Return to the Sea (with the voices of Rene Auberjonois, Clancy Brown, Kenneth Mars, and Frank Welker).