Ukyo was initially a childhood friend of Ranma's. In trade for an Okanamiyaki cart, Genma Saotome engaged his son Ranma to Ukyo. Genma then stole the Okonamiyaki cart, leaving Ukyo behind. Ukyo was furious about this, and became obsessed with revenge. She trained for the next ten years, and when she met Ranma again, it was as a boy. The events that followed led her to fall in love with Ranma, and become yet another contested fiance. She makes great Okanamiyaki, and uses a giant spatula for battle.