Lee Beom-soo

as Cha Ki-tae (8 episodes)

as Sim Seong-won (7 episodes)

as Jang Tae-su

as Jang Tae-su

as School Teacher

as Kang-don

as Self (2 episodes)

as Hwang Jae-ho, Executive Producer

as Oh Yeong-min

as Lim Gye-jin

as Young-chul

as Self (1 episode)

as Woo-jin 45

as Kwak Heung-sam (16 episodes)

as Sal-soo

as Jang Dong-soo (26 episodes)

as Kwon Yul (17 episodes)

as Self (9 episodes)

as Yoo Joong-won

as Yoo Joong-won (20 episodes)

as Lee Ha-eung (22 episodes)

as Baek Hyeon-cheol

as Yoo-bang (22 episodes)