Kim Ju-hun

as CEO Woo (1 episode)

as Do Hyeon-su (12 episodes)

as Hae-soo

as [Ho Su's father] (2 episodes)

as Park Dong-ah (16 episodes)

as Director Sa (4 episodes)

as Jung-san

as Choi Sang-rok (20 episodes)

as Manager Ha

as Lee Seo-joon (12 episodes)

as Jun-ho

as Ho-chul

as Choi Doha (16 episodes)

as Bae In-cheol (2 episodes)

as Kang Woo-il (4 episodes)

as Namgung I-hwan (4 episodes)

as Seok Do-hoon (16 episodes)

as Jun-ki (1 episode)

as Byun Jung Hoo

as Jung Ji Sub's friend

as Seo Cheong-myeong (3 episodes)

as Sung-hyun

as Cha Eun-Seok (16 episodes)

as Gi-hoon

as Lee Sang-in (16 episodes)