but is killed by Sailor Moon when she first acquired the Cutie Moon Rod. In the first anime, Kōan is very vain about her appearance to the point of swearing death upon anyone who smudges her make-up or ruins her hair, and she relies on her charms to get what she wants. She thinks that she and Rubeus are in a relationship, and competes with her sisters for his love. Kōan directly fights Sailor Mars and the others several times, with the climactic battle taking place at the Hikawa Shrine. After Kōan fails to capture Chibiusa, Rubeus reveals that she is a pawn and that he never loved her. Kōan snaps and attacks everyone in a blind rage, until Sailor Mars saves Kōan from getting hit by Sailor Jupiter, and convinces her that she is a good person that has been caught in a life of evil and that she deserves a second chance. She becomes the first sister purified with Sailor Moon's Silver Crystal. She later convinces each of her sisters to let Sailor Moon purify them. In Japanese, Kōan is voiced by Wakana Yamazaki in Sailor Moon R and by Satsuki Yukino in Crystal. In the DiC English adaptation, her name is changed to Catzi and is first voiced by Alice Poon and later Mary Long. In the Viz Media English adaptation, she is voiced by Eden Riegel. In the musicals she is portrayed by Seiko Takuma and Hinami Someya. Berthier is the second youngest sister and represents a counterpart of Sailor Mercury. Her name is based on the mineral berthierite and her magical attack is "Dark water", carrying a dowsing pendulum made of Malefic Black Crystal. Berthier is sent by Rubeus to enact "Code: 002, Operation: Remove" to eliminate all opposition to the Black Moon which includes the Sailor Guardians. Berthier disguises herself as a normal human and wows people with her dowsing abilities prior to finding Ami Mizuno and deducing her as Sailor Mercury when she used her power to find a leak in a pipe at the school. Skilled at chess, Berthier goes on television to challenge Ami to a chess match. After losing the match despite having the advantage, a fight breaks out as Berthier manages to capture Mercury in a water barrier for the Black Moon before being killed by Sailor Moon. In Sailor Moon R, Berthier has a very darkly playful personality,