Hong Wan-pyo

as Director Baek

as Jo Young-jin

as Jo Cheol Ju [Guild Merchant leader] (16 episodes)

as Yun Sung-ho (1 episode)

as Jeon Gyeong Cheol (2 episodes)

as Gye Sang Mok (16 episodes)

as Self (2 episodes)

as Ji Ha

as Talk show director (2 episodes)

as Bae Sun-woo (2 episodes)

as Kyung-su

as head teacher

as Assistant Director

as Jin Hyeok

as Yoon-geun

as Deputy Hong Wan Pyo (6 episodes)

as Byeong-heon

as Ah Rae Jeok (32 episodes)