10 Most Powerful Incarnations Of Superman
4. Ultraman
Ultraman is the Superman of Earth-Three, though he is evil and antithetical to the original Superman. Over the years, Ultraman has had his original and universe tweaked through various "crises" and other shakeups, but to put it simply, Ultraman is the evil Superman, and he's unwavering in his resolve.
The original version of Ultraman didn't weaken when he was exposed to Kryptonite. Instead, he grew stronger with each exposure, and every time this happened, he developed a new superpower. Unlike his Earth-1 counterpart, he developed the ability to see through dimensional barriers, which is how he initially learned of the Justice League and Justice Society.
His form of the Justice League was called the Crime Syndicate of America, and when he learned of the existence of other realities parallel to his own, he opted to attack them. During these engagements, he was on the receiving end of a lot of Kryptonite, and in one instance, he was overpowered through too much exposure.
His body couldn't handle all the new powers he suddenly developed, and he was defeated. Still, he manages to show up every now and again, and when he does, a massive battle often ensues. His powers mirror those of Superman of Earth-1 but aren't limited in the same way, which gives him an edge over the Man of Steel.