Kim Ju-hun

as Baseball Team Manager

as Lee Sang-in

as Bae In-cheol

as Seo Cheong-myeong

as Choi Doha

as Namgung I-hwan

as Jung-san

as Jun-ki

as Yuk-son

as Kang Woo-il

as Park Min-guk

as Jun-ho

as Ah-gwi's Thug

as [Ho Su's father]

as Lee Seo-joon

as Lee Dae-chan

as Director Sa

as Do Hyeon-su

as Boss

as Park Dong-ah

as Cha Eun-Seok

as Seok Do-hoon

as Sung-hyun

as Manager Ha

as Choi Sang-rok

as man in charge

as Ho-chul

as Hae-soo

as Gi-hoon

as Fitness trainer

as Byun Jung Hoo

as Critic

as Manager

as Jung Ji Sub's friend