Sailor Neptune
- English Name: Michelle Kaioh
- Japanese Name: Kaioh Michiru
- Name Meaning: Sea king
- Elemental Influence: Water
- Birth Date: March 6
- Zodiac Sign: Pisces
- Height: 5'4"
- Blood Type: O
- Favorite Color: Marine blue
- Favorite Gemstone: Aquamarine
- Favorite Food: Sashimi (raw meat strips)
- Least Favorite Food: Sea cucumbers
- Hobbies: Playing violin, Collecting cosmetics, swimming
- Favorite Subject: Music
- Least Favorite Subject: None
- Strengths: Playing Violin, painting
- Weaknesses: Sea cucumbers
- Dream: To be a violinist