Name: Kim Hyo Yeon (김효연)
Stage name: Hyoyeon (효연)
Nicknames: Princess Fiona, Dancing Queen
Birthdate: September 22, 1989 (age 23)
Birthplace: Incheon, South Korea
Blood Type: AB
Height: 160 cm
Weight: 45 kg
Religion: Christian
Languages: Chinese (Fluent), Japanese (Basic), English (Basic)
Education: Chungbuk Middle School
Hobbies: Shopping, films
favoriete food: Soup, Korean food
favoriete fashion: Feminine Shoes with Baggy Pants
Motto: "Everyone that works hard will succeed".
Roommate: Jessica (Old Dorm), Seo Hyun (New Dorm)