소년24

Oh Yeon-seo

Self — MC

Shin Hye-sung

Self — Judge / Director

Lee Min-woo

Self — Judge / Director

Choe Chan-yi

Oh Jin-seok

Jeon Bong-jin

Self — Judge / Vocal Master

Ha Hwi-dong

Self — Judge / Dance Master

BILL STAX

Self — Judge / Rap Master

Yoo Jae-hwan

Self — Judge / Vocal Master

Basick

Self — Judge / Dance Master

Choi Young-joon

Self — Judge / Rap Master

Tak Jin-kyu

Self — Contestant