Yukio Hoshi (Earth-8920)

Yukio Hoshi is a former Imperial Japanese assassin, spy, and super soldier, who, during World War II, took part on the Black Widow Program which sought to create Japan's own super soldiers as a response to the United States' Captain America. Given Mirakuru by her trainers as an infant, Yukio became Black Widow, and years later sought to join S.H.I.E.L.D. under orders of Arsenal.