Mindy, known as Momoe Hamaguchi (浜口ももえ Hamaguchi Momoe) in the Japanese version, is a character in Yu-Gi-Oh! GX Spirit Caller. This is the game's incarnation of Mindy from the Yu-Gi-Oh! GX anime.
Mindy initially will not Duel the player when he encounters her and wishes that she had encountered an Obelisk Blue boy instead. After the player Duels Chazz Princeton, Mindy will allow the player to Duel her, although she fails to remember his name. If the player wins, she says that she can see why Alexis Rhodes is keeping an eye on him.
After the player defeats Mindy and Jasmine a number of times, someone sends him a message, claiming to be Alexis and asking him to meet her at the girl's dormitory. When he arrives, he is spotted by Mindy and Jasmine, who assume he is up to no good and the sound the alarm that he is intruding. When the player beats Alexis, Mindy asks if she is sure about letting him go. Alexis confides in Mindy and Jasmine afterwards that she did indeed send the message, as she had wanted to Duel him.
- Mindy uses this Deck at first.
- Mindy permanently switches to this Deck once the Shadow Riders appear.