On Earth-One, this led to her becoming the supervillain known as Tsunami, utilizing her innate ability to manipulate massive quantities of water into tremendous tidal waves of force to further a crime wave in America.
Her counterpart on Earth-Two, also known as Tsunami, used her control of the ocean currents as an agent of Imperial Japan during World War II seeking revenge for the treatment inflicted upon her family by Americans.
Miya-One was an adversary of the Dial "H" for Hero teen team of Victoria Grant and Christopher King, who gained power from using alphabetic dials to assume two sets of identities during their recurring encounters with her.
Miya-Two was an opponent of the All-Star Squadron, specifically the duo of Liberty Belle and Johnny Quick who likewise accessed their abilities through fantastic formulas. She appeared twice, but unlike Miya-One, Miya-Two repented and aided the side of justice before disappearing from the public eye.