Could Omni Man Beat Superman?

Based on raw strength, Superman probably has Omni-Man beat. Omni-Man punched holes through pretty much every foe he came into contact with. ... But Omni-Man has no such qualms. He would try to kill Superman outright, but he would probably just break his fists against the invulnerable Superman.

Who would win invincible or Superman?

Mark is a smart guy, and has no qualms with holding his strength back or killing an opponent. But even at his peak strength and most blood-lusted he still couldn't dent the Man of Steel. Superman would likely be unwilling to kill Invincible, but he could definitely beat him into unconsciousness.

Can Omni-Man be defeated?

In fact, he is not even close to the top ten. The characters that could defeat Omni-Man include Darkseid, the Flash (Barry Allen), Dr. Manhattan, Saitama, Son Goku, Superman, Thanos, Thor, and Thragg.