Name: Jung Yunho (정윤호)
Stage Name: U-Know
Vocal Position: Bass
Group Position: Leader
Birthday: February 6th, 1986
Height: 184cm (~6’1 ft)
Weight: 66kg
Blood Type: A
Birth Family: Mom, Dad, & One Younger Sister
Hobbies: Dancing & Writing
Religion: Christian
Education: Myongji University
Close Friends: Sugar & Heechul (Super Junior)
Favorite Number: 5
Favorite Food: Pork rib soup (Korea), Fried beef shredded soup (Japan), anything with soup.
Favorite Singers/Celebs: Jung Ji Hyun, Eugene (SES), HOT
Favorite Sport: Taekwondo
Favorite Colors: Green
Dog: Typhoon/Taephoong

• Before debuting under TVXQ, he was a backup dancer for Dana’s 2002 single, “Diamond”. He was also featured in the music video.
• Composed, arranged, and sang “Spokesman” with Donghae of Super Junior, which was performed in the 2nd Live Asia tour concert – ‘O’.
• Featured in new Non-stop 4 & 6
• Sang Japanese solo “Crazy Life”, which was featured in the “Close to you / Crazy Life” single, the fourth installment of the group’s “TRICK” series.
• Wrote the rap lyrics for “Wrong Number”, one of the tracks in their fourth korean album “MIROTIC” with Hero.
• Wrote the rap lyrics for “Love after Love”, one of the tracks in their second korean album “Rising Sun” together with Micky and Xiah.
• Wrote the rap lyrics for “Love Bye Love”, one of the tracks in their fourth korean abum “MIROTIC” with Xiah.
• Composed and wrote the lyrics to “CHEKMATE”