Invincible (Mark Grayson) is an Image Universe superhero created by writer Robert Kirkman and artist Cory Walker, currently drawn by Ryan Ottley. Invincible first appeared in a preview as part of Savage Dragon #102 (August 2002), before graduating to his own self-titled regular series in 2003, as the premier title in Image's then-new superhero line. Invincible is the son of Omni-Man, an extraterrestrial superhero of the Viltrumite race. Invincible inherited his father's complete array of super powers and he has sworn to protect the Earth. As a teenager, he had trouble adjusting to his newfound powers and coping with the reality of his origins. Invincible is voiced by Patrick Cavanaugh in the 2008 motion comic series, and by Steven Yeun in the 2021 television series.