When Professor Tomoe and his eight-year-old daughter Hotaru were caught in a lab explosion, Hotaru was nearly killed, and Germatoid said he'd make sure they both survived if he met his demands. He then possessed Tomoe through his eye, with his face reflected in his right eye. Professor Tomoe turned evil under Germatoid's influence, until Mistress 9 awakened and sent Tomoe to stop Sailor Neptune and Sailor Uranus, who were inside their base. Germatoid left Tomoe, appearing in the form of a giant plantlike beast. Sailor Uranus blew him to bits with World Shaking, but he entered several monsters of Tomoe's creation and fought Sailor Uranus and Sailor Neptune. Eventually they were able to summon their talismans, Sailor Neptune using her Deep Aqua Mirror to paralyze them and