1. Jang Su-won is best known as a member of the South Korean boy group Sechs Kies and the duet group J-Walk, along with fellow Sechs Kies member Kim Jae-duck.

1. Jang Su-won is best known as a member of the South Korean boy group Sechs Kies and the duet group J-Walk, along with fellow Sechs Kies member Kim Jae-duck.
Jang Su-won followed a friend to try out for DSP audition and got selected.
Jang Su-won was in his second year of high school when he debuted as Sechs Kies in 1997.
Jang Su-won was known to be the most considerate and the youngest of member of the group.
In 2002, Su-won teamed with Kim Jae-duck to form J-Walk under Kiss Entertainment and began to sing more.
Since Kim Jae-duck entered the military shortly after, Jang Su-won had to promote the album by himself.
Jang Su-won entered the military in December 2009 and served in Division 15's military band.
Jang Su-won was released from the army in October 2011.
Jang Su-won starred in the drama "Misaengmool", which was a parody version of the popular drama "Misaeng" as the main character Jang Geu Rae.
Jang Su-won opened his own clothing line in the United States and provided uniforms for JYJ Kim Junsu's Hotel.
Jang Su-won has opened a Singapore restaurant, "Yummy Kampong," in Dongdaemun.
On June 12,2021, Jang Su-won's agency announced that he and his non-celebrity girlfriend were planning their wedding.
On March 21,2024, Jang Su-won's wife announced that she was pregnant with the couple's first child.