Yumama

A mysterious girl who can duel and read a book at the same time. She has the ability to stand on the ceiling and is commonly seen reading her teen heart throb book, filled with 400 pages of pictures of "sassy" cute boys, although towards the end of the third season, she discovers that the pages are really blank. She defeated Boy George, Yuki and Kokujo right before they were supposed to duel making her win instantly. She was a childhood friend of Extreme Bucketman. While she appears to be the cause of all the disruption in the tournament, she is really a pawn of her malicious older brother, Zakira. After she is released, she becomes an ally of Shobu, along with Bucketman. While brainwashed, her trump cards is Cruel Naga, Avatar of Fate and Super Necrodragon Abzo Dolba. In Duel Masters Cross her deck contains all 5 civilizations and is focused on creatures who have the following effect: "If this card is discarded during your opponent's turn, you may put this card into the Battle Zone instead of the Graveyard".

She is known as Fua Yu in the Japanese manga.