After the death of her husband at the hands of the Yakuza, martial arts expert and samurai master Tatsu Yamashiro journeyed to America, where she became the vigilante hero known as Katana.

However, Katana's quest for justice isn't a solo affair—the souls of her dead husband and countless others currently reside in her sword, the mystical blade known as the Soultaker.

Trained in martial arts and swordsmanship from a young age, Katana possesses vast combat skills and tactical expertise. She has served as a member of the Outsiders, Birds of Prey, the Suicide Squad and most recently, the Justice League of America under Colonel Steve Trevor and Amanda Waller.

Despite her commitment to her heroic duties, Katana still seeks to free the souls trapped her in sword, attempting to resolve their personal conflicts in order to grant them peace—desperately hoping one day the soul she frees will be that of her husband so he may finally be at rest.