Richard Horvitz

Richard Steven Horvitz (born July 29, 1966) is an American actor and voice actor who is best known for his voice roles as Alpha 5 in ', ', and ', the titular character Zim in the series ', the titular character Billy and his father Harold in the  series ', Razputin Aquato in the video game ', Bumble in the video game ', Rodney in ', Grey Matter in ', and Daggett Beaver in the Nickelodeon series '. He is also well-known for voicing Kaos, the main antagonist of the ' video game franchise, later reprising this role in the spin-off television series '.

For Disney, he voiced Ned Frischman in Dave the Barbarian, Aviarius in Kim Possible, a ninja in Fish Hooks, Mouth in Kick Buttowski: Suburban Daredevil, Yucky in Billy Dilley's Super-Duper Subterranean Summer, Scooper in Ted Brooks' crazy dream in Snow Dogs (uncredited), and additional voices in both the 1998 animated film Mulan and Howl's Moving Castle. Additionally, he played Teddy in the That's So Raven episode "Adventures in Boss-Sitting", and voiced Shiriki Utundu in the Tokyo DisneySea version of the Tower of Terror.