Compass appeared alongside the Martian Manhunter when J'onn J'onnz signed onto his ship to investigate the murder of a sea captain's daughter.
Igle has worked in books ranging from The Narrative of the Life of Frederick Douglass, the all-ages action miniseries Race Against Time as well as fill-in issues in mainstream titles such as Green Lantern, G.I. Joe, Martian Manhunter and Supergirl.
It is unclear whether Karmang has any of the powers of Martian Manhunter, it is not known details about his race, which although white seems to have no connection with the white Martians.
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Karmang lived on Mars, and is the sole survivor of a Martian civilization of more than a million years ago, even more ancient than the civilization of J'Onn J'onnz (the Martian Manhunter).
The Viking Prince appears briefly in Darwyn Cooke's DC: The New Frontier, a story of his being cast away and washing up on Dinosaur Island is told in a book discovered by the Martian Manhunter in his guise of John Jones.
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Partway through developing the series, Potter was told by editor Janice Race that the Martian Manhunter character would reappear in the Justice League of America title.
During his run on Martian Manhunter, John Ostrander used these similarities to explain that the Saturnians were a race created by and modelled on the Martians.