
Van Nuys, California, USA
Richard Steven Horvitz (born July 29, 1966) is an American actor and comedian, best known for his voice work in animation and video games. His voice credits include the original Alpha 5 on Mighty Morphin Power Rangers, Power Rangers Zeo and Power Rangers Turbo, Razputin in Psychonauts, Kaos in Skylanders, Billy and his father Harold in Grim & Evil and The Grim Adventures of Billy & Mandy, Grey Matter in Ben 10, Rodney in Squirrel Boy, Daggett in The Angry Beavers, Zim in Invader Zim, Orthopox in Destroy All Humans!, the Zoni in Ratchet & Clank, Bumble in Kinectimals, the Space Weaver in Broken Age, Kanchomé in Zatch Bell!, and Moxxie in Helluva Boss.

as Mark

as Billy (voice)
2013

as Chuck (voice)
2001

as Mark
1994

as Smaller Chair (voice)
1996

1997

as Aviarius (voice)
2002

as Imp (voice)
2015

as Morpheus (voice)
2016

as Billy (voice)
2001

as Grey Matter (voice)
2005

as Beaver #2 / Owl #1 (voice)
1997

as Teddy
2003
as Snap (voice)
2021

as Self
2025

as Alpha (voice)
2023

as Snap (voice)
2021
as Billy (voice)
2021

as Writer
2020

as Zim (voice)
2019

as Additional Voices (voice)
2019

as Gormal MacGuffin (voice)
2017

as Alpha 5 (voice)
2014

as Munchkin Suitor (voice)
2014

as Self
2014

as Orange Haired Elf (voice)
2013

as Grey Matter / Dispatcher (voice)
2012

as Lowe's Salesman #3
2011

as Book Store Autoraph Hound
2011

as Bob Zaiderman
2009

as Billy / Harold / Pumpkin / Trick-or-Treater Eater (voice)
2008

as Grey Matter
2008

as Billy / Harold (voice)
2007

as Sheldon Goldstein
2007

as Grey Matter / Stinkfly Prisoner (voice)
2007

as Billy / Billy's Dad (voice)
2007

as Billy / Billy's Dad (voice)
2007

as Billy / Billybot / Harold / Pale Ghoulish Juror / Chippy the Squirrel (voice) (as Richard Horvitz)
2007
as Mark
1 ep.

as Billy (voice)
1 episodes

as Chuck (voice)
1 episodes

as Mark
1 episodes

as Smaller Chair (voice)
1 episodes

1 episodes

as Aviarius (voice)
1 episodes

as Imp (voice)
1 episodes

as Morpheus (voice)
1 episodes

as Billy (voice)
184 episodes

as Grey Matter (voice)
52 episodes

as Beaver #2 / Owl #1 (voice)
1 episodes

as Teddy
1 episodes

as Alpha 5 (voice)
208 episodes

as Ninja Fish (voice)
1 episodes

as Jimmy Osgood (voice)
1 episodes

as Billy / Mogar / Rodney J. Squirrel (voice)
1 episodes

as Mitchey Mekelburg (voice)
1 episodes

as Daggett (voice)
123 episodes

as Moxxie / Crimson (voice)
20 episodes

as Lugosi (voice)
65 episodes

as Beaver #2 / Owl #1 (voice)
1 episodes

as Zim (voice)
46 episodes

as Elevator Passenger
2 episodes

as Ned Frischman (voice)
1 episodes
ADR Voice Casting