WOODZ

He was born in Gyeonggi Province, South Korea. He attended Hanlim Multi Art School. He had the opportunity to travel to Sao Paulo, Brazil and trained to become a professional athlete for two years. He was a squad of "Sport Club Corinthians Paulista Junior Team" and was selected for the Brazil national under-17 football team. He moved back to South Korea to pursue his dream of becoming a singer. He was a YG Entertainment trainee. He used to live in the Philippines and Los Angeles, California, United States.

He was a member of M.O.L.A, a project formed in 2015, together with Ji Min from 15&, Kyo Chang (Nathan), Hyung Gu (Kino) from Pentagon, and Han Sol (Vernon) from SEVENTEEN. He promoted as a solo rapper under the name Luizy in 2016. He made his solo debut on July 29, 2016, with the single "Recipe" with Jay Pak. He then released his next single, "Baby Ride" which features Hyun Sik from BtoB. He then collaborated with Hyun Sik for the single, "Eating Alone". He was also featured in "Dream", a song in Gi Kwang's "ONE" extended play.

In 2018, Yuehua Entertainment relayed that Seung Youn would promote with the name WOODZ during his solo activities. He composed "It's Okay", a song for Chinese reality television show Idol Producer. He co-composed a song for MR-X, a Chinese project group of Idol Producer former trainee.

After training for nine years, he made his appearance as a contestant on boy group survival reality show Produce X 101. (Source: Wikipedia, kprofiles.com, kpopmap.com)