As a member of gene nation he grew up in the Darwinist world of “the hill” ruled over by the mad mutant Mikhail Rasputin
. It is unknown if he was in anyway involved in the first wave of gene nationals who arrived on earth to kill humans on the eve of the mutant massacre
or if he was one of the many transported from the hill by Mikhail under threat from the morlocks former leader Storm
What is known is that he was involved in the ambush of Emma Frost
and Nate Grey
’s rescue attempt of Generation X
. In the battle he faced Gen X and was ultimately defeated. It's unknown if he died in the ensuing explosion or if he lost his powers on M-Day
Obsidian could stretch any part of his body and may have had enhanced strength. His primary power seemed to have been to take hold of his opponents and cause them to feel nothing at all providing them with a form of ecstasy while he killed them. He was also effectively Invisible in darkness.
Eyes: pure white with no visible irises
He has not appeared in any alternate realities to date.
He has not appeared in any other medium besides comics.