Kid Omni-Man is not only Invincible's sidekick but also his brother. While he has the same powers as Invincilbe, Oliver Grayson had his own struggles.
The voice cast is likely to be Steven Yeun as Mark Grayson, J. K. Simmons as Omni-man, Sandra Oh as Debbie Grayson, Seth Rogen as Allen the Alien, Walton Goggins as Cecil Stedman, Gillian Jacobs ...