Mark Grayson / Invincible (voice)
Debbie Grayson (voice)
Nolan Grayson / Omni-Man (voice)
Titan (voice)
Amber Bennett (voice)
War Woman / Holly (voice)
Martian Man (voice)
Red Rush / Josef (voice)
Donald Ferguson (voice)
Olga (voice)
Art Rosebaum (voice)
Steve (voice)
Darkwing (voice)
The Immortal / Aquarus / Bi-Plane / Kursk (voice)
Green Ghost (voice)
William Clockwell (voice)
Mauler Twins (voice)
Kill Cannon / Robber #1 (voice)
Guard #2 (voice)
Connie / Model (voice)
Various (voice) (uncredited)