Cyprine serves as the fifth and strongest member of the Witches 5, an elite group under Kaolinite’s command within the Death Busters. Operating openly at Mugen Academy without a civilian disguise, she holds a rank of level 999 and specializes in soul harvesting and neutralizing the Sailor Guardians through hailstorm-induced chaos and manipulative mind control tactics. In the manga and *Sailor Moon Crystal*, Cyprine emerges as the final summon after her predecessors fall, wielding a shard of the Taioron Crystal to target Haruka Tenou. Her clashes with Sailor Uranus, Neptune, and Pluto escalate when she withstands the Moon Spiral Heart Attack, triggering the manifestation of her twin entity, Ptilol. Their combined threat ends with Super Sailor Moon’s Rainbow Moon Heartache, though Cyprine later resurfaces briefly with a revived Witches 5 before the Outer Guardians secure her permanent defeat. The original anime merges Cyprine and Ptilol into a single entity that fractures during combat, devouring enemy attacks to amplify their power until the Sailor Guardians outmaneuver them into mutual destruction. Cyprine lures students near the Messiah of Silence statue to harvest Pure Heart Crystals, a scheme that collapses alongside the statue upon her defeat. Her open flirtation with Professor Tomoe fuels Kaolinite’s resentment. Musical adaptations streamline her role, omitting Ptilol and granting her the attack Magus Drive. The video game *Sailor Moon: Another Story* positions her as a boss adversary in Crystal Tokyo. Cyprine’s name draws from the blue vesuvianite mineral, rooted in the Greek “Kypros” (copper). She remains the sole Witch 5 member lacking a civilian identity in anime iterations.