Jang Su-won is a South Korean singer who is commonly known for being the former member of the group Sechs Kies. He was the youngest of the group, he was in sophomore year in college when he joined them. After Sechs Kies folded, Jang later teamed with Kim Jae Duc to form J-Walk. He now opened his own clothing line in the United States.
Little is known about his life before fame.
At the beginning of 2015, he revealed to have been dating a college student 13 years his junior.