Justine Gandolfi (ジュスティーヌ・ガンドルフィー Jusutīnu Gandorufī?) was Rinaldo Gandolfi's daughter who was turned into a vampire by Walter Bernhard and became a follower of the Succubus, who transformed into her form in order to escape Rinaldo. She killed her mother and brother in front of Rinaldo, causing him to create the Whip of Alchemy in order to kill her.

In the comic, the Succubus revives Justine and Rinaldo has to fight her once more.

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