First appearing in Big Bang Comics #1 (Spring 1994), he was created by Gary Carlson and drawn by his partner Chris Ecker, among others.

[citation needed] The Earth-A Ultiman is a member of the Roundtable of America, though he frequently battles evil in Empire City.

By accident, Chris' daughter Christine got exposed to a radioactive meteor giving her his powers after his death.

His Earth-B counterpart is a member of the Knights of Justice, and was a 4-F reject from the army who received powers after his car was hit by a meteorite that gave Ultiman ultrapowers.

Repeated exposures appear to slowly poison him, causing him to experience steadily more severe symptoms each time before recovering with his powers restored.