Steven Yeun as Mark Grayson / Invincible
J.K. Simmons as Nolan Grayson / Omni-Man
Sandra Oh as Debbie Grayson
Gillian Jacobs as Samantha Eve Wilkins / Atom Eve
Walton Goggins as Cecil Stedman
Jason Mantzoukas as Rex Sloan / Rex Splode
Zachary Quinto as Robot
Melise as Kate Cha / Dupli-Kate
Zazie Beetz as Amber Bennett
Chris Diamantopoulos as Donald Ferguson
Andrew Rannells as William Clockwell
Ross Marquand as The Immortal
Grey DeLisle as Monster Girl
Grey DeLisle as Shrinking Rae
Sterling K. Brown as Angstrom Levy
Seth Rogen as Allen the Alien