Yuu Fua

Yuu Fua (also known as Yumama in the English dub version) is a character who first appeared in the Duel Masters Charge season of the Duel Masters Anime and Manga. A girl who is Zakira's sister. Extreme Bucketman has a crush on her. Unlike Zakira, she is actually not evil and seeks to release the kids in his basement. (Source: Duel Masters Wiki)