Mark Grayson / Invincible (voice)
Debbie Grayson (voice)
Nolan Grayson / Omni-Man (voice)
Cecil (voice)
Shrinking Rae / Monster Girl / Olga (voice)
Amber (voice)
Eve (voice)
William (voice)
Rex (voice)
Donald (voice)
Black Samson (voice)
Mauler 1 / Mauler 2 (voice)
Immortal / Rudy (voice)
Robot (voice)
Dupli-Kate (voice)
Additional Voices (voice)
Ticket Seller / Data Twin #2 / Marvin (voice)
Allen (voice)
General Kregg (voice)
Bulletproof (voice)
Art (voice)
Angstrom Levy (voice)
Shapesmith / Rus / Corey (voice)
Paul (voice)
King Lizard (voice)
Newscaster / Umpire / Scientist (voice)
Principal/Dean Winslow (voice)
April (voice)
Steve (voice)
Titan (voice)
Matt (voice)
Telia (voice)
Thadeus (voice)
Andressa (voice)
Mrs. Farnsley / Caitlin / Denise (voice)
Nuolzot / Séance Dog (voice)
Astronaut #2 / Young Wife (voice)
Oliver (voice)
Rick (voice)
Viltrumite / Alien Guard / Neighbor (voice)
War Woman (voice)
Louise's Daughter (voice)
Darkwing / Husband / Royal Guard #1 (voice)
Rick Sheridan (voice)
Theo / Council Member #2 (voice)
Carol (voice)
Narrator (voice)
Lucan (voice)
Martian Man (voice)
Josef / Red Rush (voice)
Darkwing (voice)
Alana / Green Ghost (voice)
Guard #2 (voice)
Connie / Model (voice)
Martian Emperor (voice)
Machine Head (voice)
Vanessa / Fiona (voice)
Thokk / Battle Beast (voice)
Doug Cheston / Punk Kid (voice)
DA Sinclair (voice)
Filip Schaff (voice)
Anissa (voice)
Riley (voice)
Angstrom Jr. (voice)
Agent Spider / Jogger (voice)
Jane (voice)