"No one will be able to set foot in here, without an invitation" —Mistress Nine, Ep. #117 Mistress 9, also known as the Sovereign of Silence, is one of the main antagonists of Sailor Moon S, alongside Doctor Tomoe. She controls the Bureau of Bad Behavior and is second in command to Pharaoh 90. After Doctor Tomoe became possessed by Germatoid, he chose his daughter Hotaru as the host for Mistress 9, and she possessed her. Her first appearance was in Episode 22, "The Purity Chalice", though she is