Stage Name: U-Know
Real Name: Jung YunHo (정윤호)
Position: Vocal (Baritone); Leader
Age: 21/22 (Western/Korean)
Birthday: February 6, 1986
Birthplace : Jun Nam
Education: 3rd year university student
Height: 183 cm
Weight: 66 kg
Blood Type: A
Hobbies: Listening to music, reading, sports and composing music
Special Ability: Singing and dancing
1st Annual SM Best Competition - Best Dancing 1st Place
