Mai Valentine is a side character in the series. She is only reconized by the main characters (as well as fanboys) by her enormous boobs. Even though she says she's a good duelist, she has lost all on-screen duels, which questions her abilities. When she stating she won all locator cards, Joey claims she only slept with Kaiba to get them. Like Kemo, instead of saying "I" or "me," she says "my breasts."