- English Name: None given
- Japanese Name: Kou Seiya
- Age (Season 5, 1995): 15-16
- Birth Date: July 30, 1979
- Astrological Sign: Leo
- Height: 5'5"
- Blood Type: A
- Hobby: American football
- Favorite Color: Red
- Favorite Food: Hamburgers
- Favorite School Subject: Physical Education
- Least Favorite School Subject: Literature
- Strengths: Keyboard, writing lyrics, composing music
- Weakness: Girls