Mistress 9 (Ilya Chernozvezdova)

Mistress 9, also known as the Sovereign of Silence, was an evil entity from the Tau Star System who was implanted into the body of Ilya Chernozvezdova, a young female Russian cosmonaut in the Sailor Moon Cinematic Universe.

Early life
Ilya Chernozvezdova was born in a snowy winter night on December 31, 1985, in Yekaterinburg, Russia (formerly Sverdlovsk during the Soviet period). She moved to Saint Petersburg in 1990, one year before the collapse of the Soviet Union.

First meeting with Kaolinite and Professor Tomoe
Ilya first met Professor Souichi Tomoe in Berlin in 2007. She agrees to assist the Professor in his work.

Rivalry with Kaolinite

Disappearance
In 2008, Ilya went missing during a mission to the International Space Station. She is chosen to be the host of Mistress 9.

Trivia

 * In the original series, Mistress 9 inhabits the body of Hotaru Tomoe, who would eventually become Sailor Saturn after Mistress 9 is destroyed. In the Cinematic Universe, Hotaru has already been awakened as Sailor Saturn at the beginning of the film series in Mozuton and the Angel of Silence. The character of Ilya was created for the Mistress 9 role in the Cinematic Universe.
 * Ilya's family name "Chernozvezdova" is derived from "chernaya zvezda" (черная звезда), the Russian meaning of "black star".