Joshua Champion was a research scientist who accidentally discovered a pathway to another dimension. Possessed by the malevolent entity which rules that dimension, he attempted to invade Earth as The Commander, leading a horde of creatures from the other dimension, but Champion was freed from the alien's control and the creature exiled back to its home dimension by the Justice League of America, the Justice Society of America and Supergirl, with the assistance of Champion's son, daughter and sister (and the Monitor, accidentally). The Champion family then departed for an extended vacation, traveling between dimensions.
- This version of Joshua Champion (Earth-One), including all history and corresponding appearances, was initially erased from existence following the collapse of the original Multiverse in the 1985–86 Crisis on Infinite Earths limited series. However the ending of Convergence retroactively prevented that collapse, saving all the alternate realities, though in an "evolved" form. Even though versions of the character may have since appeared, this information does not apply to those versions.
- 3 Appearances of Joshua Champion (Earth-One)
- 1 Images featuring Joshua Champion (Earth-One)
- Quotations by or about Joshua Champion (Earth-One)
- Character Gallery: Joshua Champion (Earth-One)
This character is or was primarily an enemy of the Justice League, in any of its various incarnations. This template will categorize articles that include it into the category "Justice League Villains."