Arna was born on the planet Earth of an alternate reality several centuries after a cataclysmic event known as the Great Disaster.
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This version of Arna (Earth-AD), 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.
This character is exclusive to the continuity of Earth-AD. This version of Arna (Earth-AD), including all history and corresponding appearances, was erased from existence following the collapse of the Multiverse in the 1985-86 Crisis on Infinite Earths limited series and is now considered apocryphal. Characters inclusive to Earth-AD continuity includes those who appeared in the original OMAC comic book series and the original Kamandi comic book series.