Gender Eye is first and only shown during Syd's match with Prince Vegeta of Universe 13. Gender Eye switches the user's gender with their opponents. Vegeta was transformed into a female, while Syd transformed into a male. The Gender Eye technique also makes both opponents' power equal. However for a reason not known, this affect did not effect Vegeta and easily overpowered Syd, later forcing her to transform him back into a male.