Cast from Build Up: Vocal Boy Group Survival

Lee Da-hee

Self - MC

Kim Jae-hwan

Self - Judge

Lee Seok-hoon

Self - Judge

Solar

Self - Judge

Baekho

Self - Judge

Wendy

Self - Judge

Seo Eun-kwang

Self - Judge

Kim Seung-hun

Self - Contestant

Jeong In-seong

Self - Contestant

Jeon Woong

Self - Contestant

Yeo One

Self - Contestant

Im Joon-hyeok

Self - Contestant