According to the search results, Omni-Man is a fictional character in the Image Universe, created by writer Robert Kirkman and artist Cory Walker. He is the father of Invincible and a member of the alien Viltrumite race, working as a superhero on Earth. In the Invincible television series, Omni-Man is voiced by J. K. Simmons. At the end of the first episode, he killed the Guardians of the Globe to weaken Earths defenses for a takeover by his alien race, the Viltrumites. His murderous tendencies were a secret to the world until the end of Invincible episode 7 when he killed The Immortal again, but this time it was live on television. The father-son brawl is even bigger and bloodier than it was in the comics. Omni-Man ensures the fight takes hundreds if not thousands of human lives to teach Mark a lesson about how unimportant their lives are. Although Mark tries to put up a fight at first, Omni-Man eventually overpowers him. Omni-Man nearly kills Mark but cant make himself do it. The fight between Invincible and Omni-Man ends with Mark left clinging to his life on top of a mountain. Omni-Man leaves Earth behind after almost killing his son. It is heavily implied that its only a matter of time until the Viltrumites learn of Nolan’s failure and come to Earth to finish what he started. Omni-Man ultimately abandons his post rather than kill his own son in the finale.