She has been active since 2007.
- Name: Onishi Akiko (大西 暁子)
- Nicknames: Akki (あっきー), Akkey
- Birthdate: December 28, 1984
- Birthplace: Sapporo, Hokkaido, Japan
- Blood Type: B
- Height: 165 cm (5 ft 4.9 in)?
- Western Zodiac: Capricorn
- Eastern Zodiac: Rat
- Her surname can also be romanized as "Ohnishi".
- She graduated from Sapporo Daigaku Joshi Tanki Daigakubu.
- She is apparently married, as of September 12, 2012.
- She is also an "STV Radio Personality".
- UP-FRONT AGENCY Sapporo Branch Profile (deleted)
- Sapporo CERBIES profile (deleted)
- Official Blog (inactive)