Aluminum Siren is one of the two successors to Iron Mouse, her first major appearance in 182. Her attack is "Galactica Tsunami." She has long blue-white hair and blue eyes. She has two pieces of cloth that cross over her face and join as a star in the center, and has a light purplish fuku. When she walks around in public, she is known as Aya Reiko. She wears a light purple jacket, a pink skirt, and sometimes a purplish hat. Aluminum Siren is very ditzy, and she is always complaining or eating. In one episode, she looks at a cherry blossom that indicates the Outer Senshi have arrived, and she smiles at it saying how pretty it is. In another episode, she gives Eternal Sailormoon her card as an introduction. She is killed by Galaxia in episode 188, even though she knows who the Sailor Team and the Starlights are.

-Aya Reiko is very polite.
-Sailor Aluminum Siren travels in a phone booth, like Sailor Lead Crow.
-She gets the urge to eat every time she gets nervous or worried.
-Siren is not aggressive, but is somewhat assertive.
-Sailor Aluminum Siren is from the planet Mermaid, obviously not of our Solar System, but somewhere quite far away I'm sure.
-She hands her business card to every new person she meets.
-Lead Crow and her were rivals, turned friends.
-She was eventually annihilated by her leader due to her failure in finding Sailor
Moon's star seed(energy of sorts). But the sad thing is Sailor Aluminum Siren DID discover the whereabouts of the seed! Galaxia foolishly killed her before she could tell her that she succeeded in her mission.
-Sailor Aluminum Siren graced 7 Sailor Moon Sailor Stars episodes before her untimely demise.
-Siren was the only anima-mate to successfully find Sailor Moon's star seed.