Sunyoul is one of ten members of the TOP Media boy group UP10TION. The band, which debuted in 2015, has become known for #1 EPs like Summer Go!, Burst, and Star:dom.
UP10TION debuted on the series Masked Rookie King and he was the seventh to officially join the group.
In 2016, he was a contestant on the MBC television series King of Mask Singer.
He was born in Jeollanam-do, South Korea and has one younger sister.
In 2016, he worked with Yuju of GFriend to release the single "Cherish."