Youngjae appeared in Secret's "Shy Boy" and "Starlight Moonlight" Music Video.
Youngjae was a back-up dancer for Secret.
Youngjae is part of a gaming crew with BTOB's Eunkwang, BTS Jin, VIXX' Ken, and more.
According to the members, Youngjae is always the last to wake up and often gets late.
Youngjae used to be a trainee under JYP Entertainment.
Youngjae is the closest to Daehyun.
Youngjae only started to become interested in music in High School.
According to the members, Youngjae is the loudest member.
Youngjae got scared of Yongguk the first time they met.
Youngjae has always dreamed of becoming a professional gamer.