Hong Kyung

as Zion (1 episode)

as Kim Tae-jin (7 episodes)

as Kim Tae-jin

as Seo Go-myung

as Je-i (voice)

as Yong-jun

Producer

as PEpteK

as Self (1 episode)

as Lee Hong-sae (12 episodes)

as Self (1 episode)

as Oh Beom-seok (16 episodes)

as Koo Won-bin

as Kim Byung-joon

as Ryu I-gang (4 episodes)

as Hyeon-min

as Jeong-soo

as Baker (1 episode)

as Jwa Tae-Yi (16 episodes)

as Choi Wook Hyeon [Deserter] (5 episodes)

as 태우

as Tae U [Mio's boyfriend] (10 episodes)

as Won Byung-goo (16 episodes)

as Baek Seung-Hoon (40 episodes)