Niezwyciężony

Steven Yeun

Mark Grayson / Invincible (voice)

Sandra Oh

Debbie Grayson (voice)

J.K. Simmons

Nolan Grayson / Omni-Man (voice)

Lauren Cohan

Holly / War Woman

Jon Hamm

Steve

Mahershala Ali

Titan

Ben Schwartz

Shapesmith

Mark Hamill

Art Rosenbaum

Zachary Quinto

Robot

Andrew Rannells

William Clockwell, Everest Climber

Jason Mantzoukas

Rex Sloan, Rex Splode

Gillian Jacobs

Samantha Eve Wilkins

Zazie Beetz

Amber Bennett

Walton Goggins

Cecil (voice)

Grey DeLisle

Amanda / Dinosaur #3 / GDA Trooper (voice) / Betsy / Shrinking Rae (voice) / Monster Girl / Betsy (voice) / Monster Girl / GDA Agent / Assistant (voice) / Monster Girl / Helga / Nurse (voice) / Monster Girl / Shrinking Rae (voice) / Monster Girl / Thula

Chris Diamantopoulos

Donald (voice) / Donald / Doc Seismic (voice) / Donald / GDA Med Tech (voice) / Donald / Isotope (voice) / Donald / Jerry (voice) / Donald / Vidor / Thraxan Crew (voice) / Donald / Villain (voice) / Pete / Donald / Todd (voice)

Khary Payton

Astronaut #1 (voice) / Black Samson (voice) / Black Samson / Astronaut (voice) / Black Samson / Fighter Pilot (voice) / Black Samson / Kyle (voice) / Black Samson / Martian (voice) / Black Samson / Martian Leader (voice)

Kevin Michael Richardson

Flaxan Leader / GDA Doctor (voice) / Mauler / King Mauler (voice) / Mauler 1 / Mauler 2 (voice) / Mauler 1 / Mauler 2 / Monster (voice) / Mauler 1 / Mauler 2 / Random Maulers / Monster (voice) / Monster / Male Thraxan (voice) / Monster / Tech Trooper #1 (

Ross Marquand

Immortal / Aquarus / Bi-Plane / Kursk (voice) / Immortal / Rudy (voice) / Immortal / Rudy / Omnipotus (voice) / Immortal / Rudy / Proprietor (voice) / Rudy (voice)

Melise

Dupli-Kate (voice) / Dupli-Kate / GDA Agent (voice) / Dupli-Kate / Iguana (voice) / Dupli-Kate / Lucinda (voice) / Dupli-Kate / Wife (voice) / Dupli-Kate / Zombie #3 (voice)

Fred Tatasciore

Adam / Biology Professor (voice) / Adam / Supreme Lizard (voice) / Killcannon / Adam / The Mad Scientist (voice) / Killcannon / Captain / Paramedic (voice) / Killcannon / Robber 1 (voice) / Octoboss (voice) / The Giant (voice) / Ticket Seller / Data Twin

Nyima Funk

Additional Voices (voice) / Bridget / Additional Voices (voice)

Robert Kesselman

Additional Voices (voice)

Dan Navarro

Additional Voices (voice)

Ami Shukla

Additional Voices (voice)

Clancy Brown

Damien Darkblood (voice) / Damien Darkblood / Bryant (voice) / General Kregg (voice) / General Kregg / Ka-Hor (voice)

Seth Rogen

Allen (voice)

Jay Pharoah

Bulletproof (voice) / Bulletproof / Dinosaur #2 / Zombie #1 (voice) / Bulletproof / Komodo Dragon / Sergeant (voice) / Data Twin #1 / Cute Guy / Council Member #1 (voice)

Sterling K. Brown

Angstrom Levy (voice) / Angstrom Levy / Angstrom #646 (voice)

Gary Anthony Williams

Newscaster / Umpire / Scientist (voice) / Reporter (voice) / Space Director / TV Announcer / Graduation Announcer (voice)

Cliff Curtis

Paul (voice)

Scoot McNairy

King Lizard (voice)

Reginald VelJohnson

Principal Winslow / Tether Tyrant / GDA Scientist (voice) / Principal/Dean Winslow (voice)

Calista Flockhart

April (voice)

Max Burkholder

Matt (voice)

Zehra Fazal

Astronaut #2 / Young Wife (voice) / Louise / Astronaut #2 (voice)

Tatiana Maslany

Aquaria / Forewoman (voice) / Telia (voice)

Kari Wahlgren

Female Thraxan / GDA Agent / Announcer (voice) / Mrs. Farnsley / Caitlin / Denise (voice)

Peter Cullen

Thadeus (voice)

Rob Delaney

Nuolzot (voice) / Nuolzot / Séance Dog (voice)

Rhea Seehorn

Andressa (voice)

Lincoln Bodin

Oliver (voice)

Luke Macfarlane

Rick (voice)

Eric Bauza

DA Sinclair (voice) / Viltrumite / Alien Guard / Neighbor (voice)

Micah Aliling

Louise's Daughter (voice)

Cleveland Berto

Darkwing / Husband / Royal Guard #1 (voice)

Jonathan Groff

Rick Sheridan (voice)

Daveed Diggs

Theo / Council Member #2 (voice)

Lea Thompson

Carol (voice)

Paul F. Tompkins

Narrator (voice)

Phil LaMarr

Lucan (voice)

Chad L. Coleman

Martian Man (voice)

Michael Cudlitz

Josef / Red Rush (voice)

Lennie James

Darkwing (voice)

Sonequa Martin-Green

Alana / Green Ghost (voice)

Sean Patrick Thomas

Guard #2 (voice)

Mae Whitman

Connie / Model (voice)

Djimon Hounsou

Martian Emperor (voice)

Jeffrey Donovan

Machine Head (voice)

Unknown

Martian Emperor (voice)

Nicole Byer

Vanessa / Fiona (voice)

Michael Dorn

Thokk / Battle Beast (voice)

Justin Roiland

Doug Cheston / Punk Kid (voice)

Ezra Miller

DA Sinclair (voice)

Tim Robinson

Filip Schaff (voice)

Shantel VanSanten

Anissa (voice)

Chloe Bennet

Riley (voice)

Camden Coley

Angstrom Jr. (voice)

Josh Keaton

Agent Spider / Jogger (voice)

Ella Purnell

Jane (voice)