Morty/Rick

Justin Roiland

Summer Smith (voice) / Dream Summer (voice) / Glenn's Wife (voice)

Spencer Grammer

Beth Smith (voice)

Sarah Chalke

Jerry Smith (voice)

Chris Parnell

(voice) / Additional Voices (voice) / Jessica (voice)

Kari Wahlgren

Glexo Slimslom

Jim Rash

Zeep

Stephen Colbert

Unity

Christina Hendricks

Pat Gueterman/Courier Flaps

James Callis

Fourth-Dimensional Being

Keegan-Michael Key

Alien Leader

Matt Besser

Arthricia

Chelsea Kane

Fart

Jemaine Clement

Uncle Steve/Mr. Beauregard

Tony Barbieri

Chris

Alan Tudyk

Beta 7

Patton Oswalt

Krombopulos Michael

Andrew Daly

Second Fourth-Dimensional Being

Jordan Peele

Donna Gueterman/Federation Robot

Tricia Helfer

President / Governor Andre Curtis (voice) / Reverse Giraffe (voice)

Keith David

Gen. Nathan

Kurtwood Smith

Alien Doctor

Gary Cole

Additional Voices (voice) / King of the Sun (voice) / Morty Jr. (voice)

Maurice LaMarche

Shrimply Pibbles

Werner Herzog

Coldstone Creamery Employee

Jay Johnston

Gear Head (voice) / Plutonian Chat Show Host 2 / Teenager Employee (voice)

Scott Chernoff

Additional Voices (voice) / Birdperson (voice) / Mr. Nimbus (voice)

Dan Harmon

Ethan

Daniel Benson

Blim Blam

John Kassir

Photography Cyborgs

Arin Hanson

Assimilated Alien 1

Dawnn Lewis

Guest Voice

James Atkinson

Frankenstein/Hamurai/Mrs. Refrigerator

Kevin Michael Richardson

Sports Announcer

Ryan Elder

(voice) / Additional Voices (voice) / Mr. Twist (voice)

Rob Schrab

Additional Voices (voice) / (voice) / Gene (voice)

Tom Kenny

Greeby Bobe

Jess Harnell

Additional Voices (voice) / (voice) / Alien Waiting in Line

Nolan North

Microverse Mayor

Michael McCafferty

Veterinarian

Jill Talley

Child Roy

Will Jennings

Toby Matthews

Alex Hirsch

Paul Fleishman (voice) / Additional Voices (voice) / (voice)

Ryan Ridley

Lawyer

Paul F. Tompkins

Principal Gene Vagina (voice) / Principal Gene Vagina / Mr. Booby Buyer (voice)

Phil Hendrie

Rapper

Jevin Smith

Female Disguise / Story Train Computer (voice) / Presidentress (voice)

Tara Strong

(voice) / Quick Mystery Host / Last Will and Testimeow: Weekend at Dead Cat Lady's House II Announcer

Gary Anthony Williams

Guest Voice

William Holmes

Caretaker/Roy's Mother

Tress MacNeille

Sleepy Gary

Matt Walsh

Mr. Goldenfold (voice) / Additional Voices (voice) / Mr. Goldenfold

Brandon Johnson

Kyle

Nathan Fielder

Rick Sanchez (voice)

Ian Cardoni

Morty Smith (voice)

Harry Belden

Tammy Gueterman (voice) / Tricia Lange (voice) / Miss Lead (voice)

Cassie Steele

(voice) / Brad (voice) / Additional Voices (voice)

Echo Kellum

(voice) / Additional Voices (voice) / Snake Humanoid (voice)

Nick Reczynski

(voice) / Customs Gromflomite / Glen the Gromflomite (voice)

Eric Bauza

(voice) / Observer Offering Money (voice) / General Carl

Troy Baker

Kendra (voice) / Birddaughter / Amy (voice)

Lauren Tom

(voice)

Albro Lundy

Additional Voices (voice) / Assimilated Alien 3 (voice) / Quick Mystery Judge

Rob Paulsen

Death Stalker Leader / Knight (voice) / Pussifer (voice)

John DiMaggio

(voice)

Debra Wilson

(voice) / Karen Jamerson / Casino Worker (voice)

Maria Bamford