Rick Sanchez / Morty Smith (voice) / Mr. Poopybutthole (voice)

Justin Roiland

Beth

Sarah Chalke

Jerry Smith (voice)

Chris Parnell

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

Spencer Grammer

Additional Voices (voice) / Jessica (voice) / (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) / President Curtis

Keith David

Gen. Nathan

Kurtwood Smith

Alien Doctor

Gary Cole

Additional Voices (voice) / King of the Sun (voice) / Abradolf Lincoler (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) / Tom Randolph (voice)

Rob Schrab

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

Tom Kenny

Greeby Bobe

Jess Harnell

Additional Voices (voice) / Alien Waiting in Line / Special Agent Mongo Bongo (voice)

Nolan North

Microverse Mayor

Michael McCafferty

Veterinarian

Jill Talley

Toby Matthews

Alex Hirsch

(voice) / Additional Voices (voice) / Lighthouse Chief (voice)

Ryan Ridley

Child Roy

Will Jennings

Lawyer

Paul F. Tompkins

Principal Gene Vagina (voice) / Scary Glenn (voice) / Principal Gene Vagina

Phil Hendrie

Rapper

Jevin Smith

Stacy (voice) / Additional Voices (voice) / Tinkles

Tara Strong

(voice) / Assimilated Alien 5 (voice) / Poncho

Gary Anthony Williams

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

Brandon Johnson

Guest Voice

William Holmes

Caretaker/Roy's Mother

Tress MacNeille

Sleepy Gary

Matt Walsh

Kyle

Nathan Fielder

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

Cassie Steele

Rick Sanchez (voice)

Ian Cardoni

Morty Smith (voice)

Harry Belden

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

Echo Kellum

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

Nick Reczynski

(voice) / Observer Offering Money (voice) / Timmy Timtim (voice)

Troy Baker

Peasant 1 / Good Cop / Giant Judge (voice)

Rob Paulsen

Death Stalker Leader / Knight (voice) / Gramuflack Reporter (voice)

John DiMaggio

Director

Pete Michels

Director

Wesley Archer

Director

Dominic Polcino

Director

Jacob Hair