Full name: Tomoe Souichi. Leader of the Death Busters, father of Tomoe Hotaru (aka Sailor Saturn), and creator of Mistress Nine. Possessed by an evil force during a laboratory accident gone awry, he led a double life - at one moment a loving father and all-around nice guy, and the next a demented mad scientist with one of the more evil cackles in anime history. He sent the Death Busters to collect heart crystals (sort of a manifestation of the life essence) from pure-hearted people in order to create an evil Messiah of Silence and destroy the world.

He had a really cool pair of glasses, one lens of which was opaque with this nifty symbol etched into it.