In the anime, she posed as Ginga TV producer, Chuuko Nezu, and communicated with Galaxia via a telephone booth.
Her targets were usually people who had some sort of celebrity status. She found no real Star Seeds, however, and the people she attacked all transformed into a Phage. Frightened by her repeated failures, she eventually stopped answering her phone, and ran away from it when it appeared near her. When she finally answered the phone in episode 181, Sailor Galaxia removed her bracelets, thus killing her.
- Bracelets - Sailor Iron Mouse could fire blasts from her bracelets that would remove a person's Star Seed, like all the Galactica Shadow members.
Sailor Jupiter was able to block Iron Mouse's unnamed energy beam attack, and Sailor Uranus and Sailor Neptune unleashed their Space Turbulence and Submarine Violon Tide attacks, respectively, against her. However, Sailor Iron Mouse blocked these attacks with her own Galactica Crunch, and might have done even more damage to the vulnerable Senshi, had Sailor Star Healer's attack not turned her to dust. It was hinted that she killed her planet's senshi, Sailor Chuu for her star seed so she can gain Sailor Galaxia's favor.
- Galactica Crunch - Sailor Iron Mouse's primary attack.
Sailor Iron Mouse appeared in several Sera Myu musicals. The 1996 winter special Sailor Moon Sailor Stars and its 1997 winter revision, and the 2003 summer special Starlights - Ryuusei Densetsu and its revision Kakyuu-Ouhi Kourin - The Second Stage Final.
In Sailor Moon Sailor Stars, she was among the minions of Galaxia sent to Earth to draw out and destroy the Sailor Senshi there. She performed in Juuban Municipal High School's musical festival while in disguise with her fellow Sailor Animamates. In this production she was played by Chie Maruyama.
In Starlights - Ryuusei Densetsu and Kakyuu-Ouhi Kourin, Sailor Iron Mouse posed as a member of the Dancing Animamates. She went by the name "Chuu Rat" and called herself the top dancer. In those productions she was the target of teasing, especially about the fact that she ended her sentence with "chuu," the sound of a mouse's squeak; the other characters said that it sounded like manjuu. She was played by Aki Kudou.
Sailor Iron Mouse has short curly white hair. She has white mouse ears and yellow beads around her ears. She also has gray eyes.
She wears white puffy sleeves and a white blouse witth loose black bows and a black bikini. On her feet, she wears white stockings and white high heel boots.
DisguiseSailor Iron Mouse's disguise name was Chuuko Nezu. She used that form to sneak out and see for Usagi, so she could steal her Star Seed. Once, Usagi was with Seiya however, because of her failures of not collecting Star Seed she attacked her without thinking. Seiya than began to get scared and transformed as then Sailor Moon got shocked at Seiya being a Senshi. From that she went to a phone booth to call Galaxia, however, Galaxia was angry and killed her in the phone booth.