The Bare Facts
Name: Kaiou Michiru
Seiyuu: Katsuki Matsuko
Age: Currently 17.
Birthday: March 6th
Birthstone: Aquamarine
Astrological Sign: Pieces
Blood Type: O
Favorite Class: Music
Least Favorite Class: Nothing
Favorite Food: sashmi
Least Favorite Food: n/a
Hobbies: playing violin/painting/swimming
Favorite Colors: marine
Family: unknown

These are Michiru's attacks and henshin [transformation] phrases:

• Neptune Planet Power, Make up (SMS, SMSS, SMStars)
• Deep Submerge (SMS, SMSS, SMStars)
• Submarine Reflection (SMSS movie, SMStars)

One of the two mysterious senshi that appeared during SMS, Michiru is one of the rich set, and, despite being only one year older than the rest of the inner senshi, often spends time with Haruka and remains quite aloof from the other senshi, only rejoining the group in times of peril. Her heart crystal was one of the talismans needed in SMS. (The Mirror)