Kim Eui-sung

as Bae Pil-gu (1 episode)

as Jo Cheol-ho (1 episode)

as Director of the NIS

as Jo Won-do (7 episodes)

as Self (1 episode)

as Ko Seung-cheol (7 episodes)

as Manager Choi

as Choi Jo-eun (8 episodes)

as Narrator (voice)

as Chun-sik

as Actor (1 episode), as Jang Myung-jun (1 episode)

as Jajang / Doctor

as Oh Gook-sang

as Self (1 episode)

as Tick-tock Grandpa (6 episodes)

as NIS Director Choi (2 episodes)

as Hwang Won-hyeong (16 episodes)

as Self (1 episode)

as Jajang / Doctor

as Masayoshi Son (4 episodes)

as Self