Yu-sin

as Baek Do-hyun (2 episodes)

as Nam Woo-min (2 episodes)

as Lee Hyung-oh (2 episodes)

as Self (archive footage) (2 episodes)

as Self - Contestant (9 episodes)

as Yoon Si-woo (2 episodes)

as AI - For Me (1 episode)

as Young-jae

as Lee Ju-won (8 episodes), Theme Song Performance

as Song Min-hyuk (2 episodes)

as Jang Tae-jun (2 episodes)

as Sian (2 episodes)

as Su-hyeok (2 episodes)

as Hyo-sang

as Yu-eum (2 episodes)