Katana is the brother of Tanaka, possibly the last two Shofixti males to survive the gigantic Glory Device explosion at the end of the First War of the Alliance; at the time that Zelnick went searching for the remnants of the Shofixti, Melnorme intelligence gave these two as the last known survivors of the Shofixti military.
Given the enormously fast breeding rates and complex genealogies of the Shofixti and the chaos during the second war, records are incomplete, but we believe either Katana or Tanaka was the individual who contacted Captain Zelnick of the Vindicator and with his help became the progenitor of the reborn Shofixti race. Rumors have it that Tanaka met Zelnick first, but Zelnick killed him due to a misunderstanding, upon which he later met Katana. However other records ignore this story and claim that the Captain's dealings were entirely with Tanaka, and that Katana had not, in fact, survived the war. The generally accepted claim is that Tanaka is the true Shofixti progenitor and the story of Katana is a spurious one.