Kaolinite

Kaolinite is the loyal assistant of Professor Tomoe, and is also greatly infatuated with him. She first appears in Act 24 of the manga and Episode 90 of the anime. A difference between two variations is Kaolinite's treatment of Hotaru: while in the anime Kaori frequently provokes and mocks Hotaru, in the manga she shows concern towards the girl. Hotaru, however, feels that Kaori's presence in the family home is a sign that she does not know her place. Kaolinite demonstrates several powers throughout the series, including levitation, teleportation, limited shape-shifting, and using her hair as a weapon (similar to Mistress 9).

In the anime, she is the first of the Death Busters to openly attack people who possess pure heart crystals, using the bio-engineered Daimons she helped create. Her goal is to find the three Talismans. In the manga, Kaolinite's role is slightly different. As opposed to the anime, where her origins are unknown, it is revealed in one of Professor Tomoe's flashbacks that she became Kaolinite after being struck by random lightning during a chaotic storm that occurred as the pair attempted to reconstruct the maimed body of his daughter Hotaru. When she rises from the floor, her eyes are shining. Her title is "Magus Kaolinite", Magus being a position that all of the Witches 5 aspire to reach.

A privilege of the Magus position is that the use of the Tau Star System's crystal is accessible. In the manga, it is Kaolinite, not Tomoe, to whom the Witches 5 answer. She sees them in no way other than servants, demonstrating annoyance when Mimete appeals to her for help. It is implied that she wishes to be Pharaoh 90's partner in place of Mistress 9, something Mistress 9 is aware of and views with amusement.