Baron Katana (Earth-One)
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This version of Baron Katana (Earth-One), including all history and corresponding appearances, was erased from existence following the collapse of the original Multiverse in the 1985–86 Crisis on Infinite Earths limited series. Even though versions of the character may have since appeared, this information does not apply to those versions.
- First Appearance: The Flash Vol 1 180 (June, 1968)
- Last Appearance: The Flash Vol 1 181 (August, 1968)