Ms. Dorothy, known as Tome-san in the Japanese version, is a school staff member who works and owns Duel Academy's card shop. She actually has very little knowledge of the rules of a real Duel.
Ms. Dorothy gave Jaden Yuki "Transcendent Wings" and "Winged Kuriboh LV10", as a reward for him helping her out earlier in the episode. Since then, Ms. Dorothy has become well acquainted with Jaden and his friends. It is sometimes hinted that she and Chancellor Sheppard are romantically attracted to each other.
In the dubbed version, she is "Miss Duel Academy".
In Yu-Gi-Oh! GX Tag Force, after beating the game with a number of characters, the player may face Ms. Dorothy dressed as "Dark Magician Girl" at the school festival.
In Tag Force 2, in the Dodgeball minigame, Dorothy tosses only cream pies and does not move from her position. Should the player get knocked out, she will start playing normally, although she will still remain in her position
In Tag Force 3, Dorothy has 3 different possible decks as an opponent and all are virtually useless. One consists of nothing but Level 5 Normal Monsters (Without any support or tribute fodder, making the entire deck useless).
However, when you partner with her, she uses a Deck that consists almost entirely of Tuner Monsters and Tuner Monster support cards, which would be useless on its own, but is extremely powerful when combined with your own non-Tuner monsters, especially considering her Extra Deck is full of useful Synchro Monsters including "Brionac, Dragon of the Ice Barrier", "Stardust Dragon" and so on.
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