Ultraman is the name of several fictional character, who are supervillain that appear in stories published by DC Comics. The characters are all evil alternate universe counterparts of Superman. Ultraman first appeared in Justice League of America #29 (August 1964).
Ultraman first appeared as the evil counterpart of Superman on the original Earth-Three. Having created the worlds of Earth-One, containing Silver Age superheroes, as well as Earth-Two, containing the golden age ones, DC comics decided to expand the universe to include various themed universes. The first of these was Earth-Three, in which there were villainous counterparts of DC's heroes as well as heroic counterparts of DC's villains. The first Ultraman was killed in Crisis on Infinite Earths and Earth-Three was destroyed by an anti-matter storm and then wiped from continuity at the end of the series. This original Earth-Three Ultraman has reappeared briefly both in the 1980s Animal Man series and the later Infinite Crisis mini-series.
Since Crisis on Infinite Earths, DC has returned to the concept of Ultraman, creating several different characters with that name, often appearing only for a single story. Two versions of the character have appeared several times each. The first was an anti-matter version of Ultraman, created for Grant Morrison's JLA: Earth 2 graphic novel. This version has appeared several times and continues to be used though an alternate of this antimatter version was slain at the conclusion of Final Crisis series. Another version closer to the Silver Age original Ultraman appeared on the post-52 universe's Earth-3. Based on comments by Grant Morrison, this Earth-3 universe is not the pre-Crisis Earth-Three, making this a new character unrelated to previous versions. This version was apparently killed during the events of Countdown to Final Crisis.
Born as the son of Jur-Ll (versus Superman's father, Jor-El) in the Pre-Crisis reality termed "Earth-Three", Ultraman was the Kryptonian who grew up on the reversed Earth of that reality, and later as an adult became a member of the criminal organization the Crime Syndicate of America.(Justice League of America (Vol #1) #29)} Unlike Superman, the Earth-Three Ultraman gets stronger every time he is exposed to kryptonite, originally developing a completely new superpower with each new exposure. In one such encounter, Ultraman acquired the ability to see through dimensional barriers, thus alerting the Crime Syndicate to the existence of alternate Earths in their first appearance. This allowed the Syndicate to attack the Justice League and Justice Society. Ultraman also differed from Superman in that his version of Krypton had not exploded. Where the Earth-Three dimension Kryptonite came from was never specifically listed in any published book.
Read more about Ultraman (DC) at Wikipedia ...
Official Site: DC Comics
Links: Wikipedia DC Comics Wiki Comicvine