Decibel

Kim Rae-won

Kang Do-young

Lee Jong-suk

Jeon Tae-seong

Jung Sang-hoon

Oh Dae-oh

Park Byung-eun

Cha Young-han

Lee Sang-hee

Jung Yoo-jung

Jo Dal-hwan

Roh Jung-sub

Cha Eun-woo

Jeon Tae-ryong

Lee Min-ki

Hwang Young-woo

Kim Seul-gi

Han Mi-nyeo

Kang Kyung-hun

Manager

Woo Ji-hyun

Kim Yoo-taek

Jeon Ah-hee

Teacher