박영규

Kim Gab-seob

Oh Young-kyu

Goldman President

Jin-bong's Father

Chairman Park Young-kyu

Principal (uncredited)

Ki Jeong-do

Mr. Seo

Kim Young-Woong

Self

Nam Gun-Ho

Park Young-gyu

Park Hyeon-do

Hwang Yeong-Kyu

Do Choong

Park Choon-sub

Jong Do-song

King Seonjo

Kang Hyun-chul

CEO Lee Jong-ho

Yi In-im

Doctor in Joseon era

Oh Wang-sung

Dr. Swarski

Kang Jin

King Taejong

Park Kwang-seok

Chairman Cha