언더나인틴

은혁

MC

Kim So-hyun

MC

허솔지

Vocal mentor

크러쉬

Vocal Mentor

Bae Hyeon-jun

김준서

Self - Contestant

신예찬

Self - Contestant

Kim Tae-woo

Self/ Contestant

Jung Jinsung

Self/ Contestant

정택현

Self/ Contestant

Jeon Doyeom

Self/ Contestant

Yoo Yongha

Self/ Contestant

이승환

Self/ Contestant

Park Sungwon

Self/ Contestant