Isis, known as Naomi Ishizu (石津ナオミ Ishizu Naomi) in the Japanese version, is a character in Yu-Gi-Oh! Forbidden Memories. She is the game's incarnation of Ishizu Ishtar, a character from the Yu-Gi-Oh! manga and anime. She has a fierce personality, contrasting her manga and anime depictions.
Isis appears as one of the contenders in the Duel Monsters World Championship. After she lost to Yugi Muto, her Millennium Necklace got absorbed into 1 of the Millennium Item Cards.
Isis uses mainly WATER monsters. Her strongest cards are "B. Skull Dragon" and "Twin-headed Thunder Dragon". She can also use Swords of Revealing Light.