Kim Ju-hun

as Do Hyeon-su

as Hae-soo

as [Ho Su's father]

as Park Dong-ah

as Director Sa

as Jung-san

as Choi Sang-rok

as Manager Ha

as Lee Seo-joon

as Jun-ho

as Doctor

as Ho-chul

as Choi Doha

as Bae In-cheol

as Kang Woo-il

as Namgung I-hwan

as Seok Do-hoon

as Jun-ki

as Byun Jung Hoo

as Jung Ji Sub's friend

as Seo Cheong-myeong

as Sung-hyun

as Cha Eun-Seok

as Gi-hoon

as Lee Sang-in

as Lee Dae-chan

as Manager

as Critic

as Yuk-son

as Park Min-guk

as Baseball Team Manager

as Boss

as Fitness trainer

as Ah-gwi's Thug

as Simon

as man in charge

as Lee Jung-yeol

as CEO Woo