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.

Filmography

• 2023Mighty Morphin Power Rangers: Once & Always — Alpha (voice)
• Sketchy Queens — Various Characters
• 2021Captain Daddy — Billy (voice)
• Jellystone! — Billy / Mogar / Rodney J. Squirrel (voice)
• 2021Seal Team — Snap (voice)
• 2020Green Seas — Writer
• Helluva Boss — Moxxie / Crimson (voice)
• 2020The SpongeBob Movie: Sponge on the Run — Additional Voices (voice)
• 2019Invader Zim: Enter the Florpus — Zim (voice)
• 2019The Angry Birds Movie 2 — Additional Voices (voice)
• Little Big Awesome — Pacifier / Jerry / Bear (voice), Stevey Murple (voice)
• 2017Meeting MacGuffin — Gormal MacGuffin (voice)
• Bunnicula — Lugosi (voice)
• Camp Camp — Xemüg (voice) (as Rico Bonet)
• Skylanders Academy — Kaos (voice)
• The Comeback Kids — Richie
• The Loud House — Morpheus (voice)
• New Looney Tunes — Imp (voice)
• 2014Legends of Oz: Dorothy's Return — Munchkin Suitor (voice)
• 2014Mighty Morphin Power Rangers: Green With Evil — Alpha 5 (voice)
• Mixels — Mixadel, Scrud, Splasho
• 2013Saving Santa — Orange Haired Elf (voice)
• Teen Titans Go! — Billy (voice)
• 2012Ben 10: Destroy All Aliens — Grey Matter / Dispatcher (voice)
• The Bite-Sized Adventures of Sam Sandwich — Fryborg / Big Cheese / Salty Pup (voice)
• 2011Crazy, Stupid, Love. — Lowe's Salesman #3
• 2011Fred & Vinnie — Book Store Autoraph Hound
• Fish Hooks — Ninja Fish (voice), Salmon 2 (voice), Portswain (voice)
• 2009The Informant! — Bob Zaiderman
• Betsy's Kindergarten Adventures — Scott / Newton / Dad (voice)
• 2008Snack Break — Grey Matter
• 2008Underfist: Halloween Bash — Billy / Harold / Pumpkin / Trick-or-Treater Eater (voice)
• 2007Ben 10: Secret of the Omnitrix — Grey Matter / Stinkfly Prisoner (voice)
• 2007Billy & Mandy's Big Boogey Adventure — Billy / Billybot / Harold / Pale Ghoulish Juror / Chippy the Squirrel (voice) (as Richard Horvitz)
• 2007Billy & Mandy: Wrath of the Spider Queen — Billy / Billy's Dad (voice)
• 2007CN Invaded Part 5: Billy & Mandy Moon the Moon — Billy / Billy's Dad (voice)
• El Tigre: The Adventures of Manny Rivera
• 2007Hard Four — Sheldon Goldstein
• 2007The Grim Adventures of the Kids Next Door — Billy / Harold (voice)
• 2006Ben 10 Merry Christmas — Grey Matter
• 2006Big Babies — Waaa Baby
• Shorty McShorts' Shorts — Dudley / Guard (voice)
• Squirrel Boy
• Ben 10 — Grey Matter (voice)
• 2005Billy and Mandy Save Christmas — Billy (voice) (as Richard Horvitz)
• 2005Son of the Mask — Otis (voice)
• 2004Cartoon Network Christmas: Yuletide Follies — Billy (Voice)
• Dave the Barbarian — Ned Frischman (voice), Ned Frishman / Guard / Vicious Looking Warrior (voice)
• 2004EuroTrip — ADR Voice Casting
• 2004Power Rangers Dino Thunder: Legacy of Power — Alpha 5 (voice) (uncredited)
• 2003Billy & Mandy's Jacked-Up Halloween — Billy/Guy (voice)
• That's So Raven — Teddy
• Codename: Kids Next Door
• Kim Possible — Aviarius (voice)
• Maktar — Richard Horowitz
• 2002Snow Dogs — Scooper (voice) (uncredited)
• 2001Cats & Dogs — Puppy in Barn (voice)
• Grim & Evil
• Invader ZIM — Zim (voice)
• 2001Osmosis Jones — Additional Character Voices (voice)
• 2001Shrek — ADR & Dubbing
• The Fairly OddParents — Chuck (voice)
• The Grim Adventures of Billy and Mandy — Billy (voice), Writer
• As Told by Ginger — Mitchey Mekelburg (voice)
• Static Shock — Jimmy Osgood (voice)
• 2000The Grim Adventures of Billy & Mandy: Meet the Reaper — Billy (voice)
• 1999Jingle Bells — Cheddar (voice)
• 1999Storm — Danny
• The Chimp Channel
• 1998Mulan — Additional Voices (voice)
• 1998Sabrina Goes to Rome — Stonehenge (voice)
• Cow and Chicken — Beaver #2 / Owl #1 (voice)
• 1997Galgameth — Kinch
• I Am Weasel — Beaver #2 / Owl #1 (voice)
• Johnny Bravo
• The Angry Beavers — Daggett (voice)
• 1997Turbo: A Power Rangers Movie — Alpha 5 (voice)
• Working — Elevator Passenger
• 1996Jingle All the Way — Demon Team (voice)
• 1996Mighty Morphin Power Rangers Live: The World Tour Live-on-Stage — Alpha 5 (voice)
• 1996Mighty Morphin Power Rangers: Ninja Quest — Alpha 5 (voice)
• 1996Power Rangers Zeo: Zeo Quest — Alpha 5 (voice)
• Sabrina, the Teenage Witch — Smaller Chair (voice), Duck Head (voice)
• 1996Sherman's Way: A Kid's Guide to Coping with Change — Corny
• 1995Get Street Smart: A Kid's Guide to Stranger Dangers — Capricorn (as Richard Stults)
• 1995Mighty Morphin Power Rangers: The Movie — Alpha 5 (voice)
• 1994Angry Beavers in: "Snowbound" — Daggett Beaver
• Babylon 5 — Mark
• 1994Mighty Morphin Power Rangers: Alpha's Magical Christmas — Alpha 5 (voice)
• Power Rangers — Alpha 5 (voice), Alpha 7 (voice), Mantamobile (voice)
• 1993Power Rangers Green With Evil — Alpha 5
• The Legend of Prince Valiant
• 1989How I Got Into College — Young Energizer
• The Munsters Today — Howie Buchanan
• 1987Summer School — Alan Eakian

Appearances as themselves (2)

• 2025Hazbin Hotel: Live on Broadway — Self
• 2014I Know That Voice — Self