'Rick and Morty' Cast and Guest Stars

The  cast is filled with veteran voice-over actors, as well as skilled comedians and writers. Because Rick and Morty is so popular, it's able to attract A-list actors and celebrities.

01
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'Rick and Morty' Main Cast

'Rick and Morty' Cast
(L-R) Dan Harmon, Justin Roiland, Chris Parnell and Sarah Chalke attend The Adult Swim Rick and Morty autograph signing during Adult Swim At New York Comic Con 2014 at Jacob Javitz Center on October 11, 2014 in New York City. Photo by Astrid Stawiarz/WireImage for Turner Networks

Since Rick and Morty premiered in December 2013, it has not only increased its ratings, but also beat out its competitors. Rick and Morty consistently wins its timeslot. The great Rick and Morty cast is one of the reasons it's such a hit. Find out who is behind the characters in this Rick and Morty cast list.

02
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Justin Roiland / Rick / Mort / Mr. Poopybutthole

Justin Roiland - Rick and Morty
Justin Roiland speaks onstage at the Rick and Morty panel during New York Comic Con 2013 at the Javits Center on October 12, 2013 in New York City. Photo by Theo Wargo/WireImage

Justin Roiland is the creator of Rick and Morty. You may recognize his voice as the Earl of Lemongrab on Adventure Time (unacceptable!); Blendin Blandin on ; Oscar on Fish Hooks; and Chris on . Justin Roiland is also a writer on Rick and Morty and on Fish Hooks. In 2015 he won the Behind the Voice Actors Award for Best Male Lead Vocal Performance in a Television Series - Comedy/Musical for playing Rick Sanchez on Rick and Morty.

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Chris Parnell / Jerry

Chris Parnell recording for 'The New Mr. Peabody & Sherman Show'
Chris Parnell recording for 'The New Mr. Peabody & Sherman Show'. Netflix

Chris Parnell is one of the most hard-working actors in Hollywood, whose name you might not know. He's famous for acting in live-action TV shows and movies, like Saturday Night Live30 RockAnchorman: The Legend of Ron Burgundy and Drunk History. You probably recognize his voice. He plays Cyril on ; Snoot on Dawn of the Croods; Doctor on ; and Mr. Peabody on The Mr. Peabody & Sherman Show. He has been nominated for a Behind the Voice Actors Award.

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Spencer Grammer / Summer

Spencer Grammer - Rick and Morty
Spencer Grammer attends the 15th annual Les Girls Cabaret at Avalon on October 11, 2015 in Hollywood, California. Photo by Tibrina Hobson/WireImage

You might recognize Spencer Grammer as Asheligh, from the short-lived Mr. Robinson, or Jean Cassidy on Chicago P.D., or Casey Cartwright in Greek. She is perhaps most famous for being the daughter of Kelsey Grammer (Cheers and Frasier).

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Sarah Chalke / Beth

Prep and Landing - Sarah Chalke
Prep and Landing - Sarah Chalke. Disney

Sarah Chalke is very recognizable, because she's played roles on several live-action TV shows. You may have seen her as Angie on Cougar Town; Stella on How I Met Your Mother; or Amy on Backstrom. She's probably most famous for playing Dr. Elliot Reid on Scrubs. As a voice-over actress, she plays Magee in both  Christmas specials. She has been nominated for a Behind the Voice Actors Award for playing Beth on Rick and Morty.

 

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Kari Wahlgren / Jessica

Kari Wahlgren - Rick and Morty
Actress Kari Wahlgren arrives at the Los Angeles Premiere of Disney's 'The Pirate Fairy' held on March 22, 2014 at Walt Disney Studio Lot in Burbank, California. Photo by Barry King/FilmMagic

Kari Wahlgren is a veteran voice-over actress. She has voiced many roles in both animated movies and TV cartoons. You might recognize her voice from playing Shandra on Gravity Falls; Sissy Salad on ; Mrs. Yakamora on The Mr. Peabody and Sherman Show; Joan Grody on Teenage Mutant Ninja Turtles; Tigress on Kung Fu Panda: Legends of Awesomeness; and Little Suzy on . She has also voiced characters for DC video games, like Black Canary and Hawkgirl in Lego Batman 3: Beyond Gotham. In 2013, she won Best Voice Actress of the Year at the Behind the Voice Actors Awards.

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Ryan Ridley / Cousin Nicky / Roy's Doctor

Ryan Ridley doesn't have a long list of voice-over credits to his name because he's too busy behind the scenes. Ryan Ridley is a writer on . Previously, he was a writing for Community. He also played the Delivery Man on The Sarah Silverman Program.

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Tom Kenny / Squanchy

Tom Kenny - Rick and Morty
Tom Kenny attends Florida Supercon at the Miami Beach Convention Center on June 27, 2015 in Miami Beach, Florida. Photo by Aaron Davidson/WireImage

If you're a fan of TV cartoons, Tom Kenny is a household name to you. It's almost easier to list which TV cartoons he isn't on. He's world-famous for playing SpongeBob SquarePants. He also plays the Ice King on Adventure Time; Dr. Octavius on Ultimate Spider-Man; Mayor on ; Ryan on ; and Doc Rockwell on Teenage Mutant Ninja Turtles. He has won two Annie Awards for Outstanding Achievement in Voice Acting, and two Behind the Voice Actors Awards.

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Maurice LaMarche / Abradolph Lincler / Eyeholes Announcer

Maurice LaMarche - Comic Con 2008
Maurice LaMarche signs autographs at the 'Futurama' Panel during the 2008 Comic Con at the San Diego Convention Center on July 26, 2008 in San Diego, California. Michael Buckner/Getty Images for Fox

Maurice LaMarche is another award-winning voice-over actor who works on nearly every hit TV cartoon. He plays Yosemite Sam on Wabbit; Tickula on ; Aiwei on ; Grand Master Wizard on Adventure Time; and Kif on Futurama. He won two Emmy Awards for Outstanding Voice-Over Performance for . He has also won one Annie Award and two Behind the Voice Actors Awards.

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Phil Hendrie / Principal Vagina

Phil Hendrie - Rick and Morty
Phil Hendrie during The 10th Annual U.S. Comedy Arts Festival - Who's Funnier - The Left or The Right at St. Regis Hotel Ballroom in Aspen, Colorado, United States. Photo by Jeff Kravitz/FilmMagic, Inc

Phil Hendrie is known in Hollywood for comedy. You may recognize his voice from playing Frida Waterfall in Futurama: Into the Wild Green Yonder; Little John on ; the Announcer on TripTank; and some of the characters on .

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Dan Harmon / Birdperson

Dan Harmon and Justin Roiland - Rick and Morty
Creators Dan Harmon (L) and Justin Roiland of 'Rick and Morty' pose for a portrait at Getty Images Portrait Studio powered by Samsung Galaxy at Comic-Con International 2015 at Hard Rock Hotel San Diego on July 10, 2015 in San Diego, California. Photo by Maarten de Boer/Getty Images

Dan Harmon (pictured left) has worked with Justin Roiland (pictured right) for years. They were both writers on Community and The Sarah Silverman Program. They are also both writers and executive producers for Rick and Morty. Harmon played Dr. Jekyll in Mary Shelley's Frankenhole. Harmon won an Emmy award, not for voice-over acting, but for helping write the music and lyrics to "Hugh Jackman Opening Number" for the 2009 Academy Awards.

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'Rick and Morty' Guest Stars

Stephen Colbert
Stephan Colbert attends Montclair Film Festival presents Celebrity Nerd-Off: Stephen Colbert & J.J. Abrams on November 21, 2015 in Newark, New Jersey. Paul Zimmerman/Getty Images for Montclair Film Festival

Rick and Morty is the kind of TV cartoon that attracts famous and talented guest stars. Many notable actors and actresses have voiced characters for Rick and Morty.

Stephen Colbert (The Late Show with Stephen Colbert) as Zeep

John Oliver (Last Week Tonight with John Oliver) as Dr. Xenon Bloom

Jemaine Clement (Flight of the Conchords) as Fart

Keegan-Michael Key and Jordan Peele (Key and Peele) as Fourth-Dimensional Testicle Monsters

Christina Hendricks (Joan, Mad Men) as Unity

Tricia Helfer (Number Six, Battlestar Galactica) as Donna Gueterman

Gary Cole (Office Space) as Alien Doctor

Patton Oswalt (Billy, Agents of S.H.I.E.L.D.) as Beta 7

Werner Herzog (Director, Encounters at the End of the World) as Alien in Wheelchair

Kurtwood Smith (That '70s Show) as General Nathan

Dana Carvey (Saturay Night Live) as Leonard

David Cross (Arrested Development) as Prince Nebulon

Alfred Molina (Doctor Octopus, Spider-Man 2) as The Devil 

Rob Paulsen (Donatello, Teenage Mutant Ninja Turtles) as the Centaur

Tress MacNeille (Agnes Skinner, The Simpsons) as the Caretaker

Tara Strong (Twilight Sparkle, ) as the Doctor