- Josephine Mystère (ジョセフィーヌ・ミステール Josafīnu Misutēru?) / Cagliostro (カリオストロ Kariosutoro?)
- Voiced by: Asami Sanada
- Henriette's older sister who appears in the 2nd PSP game. During the game, she acts as student council president and assigns Ellery to be in charge of Milky Holmes.
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