Lee Hwang-eui

as Jung Hyeon Nam [I Sin's father] (8 episodes)

as Gray-haired Man

as Noh Young-jae (3 episodes)

as Chairman Kim (1 episode)

as Mo Young-bae (2 episodes)

as Wang Tae-ja (2 episodes)

as Random guy talking to Myul Mang about flowers (1 episode)

as Han Seok-joong (12 episodes)

as Seo Myeong-pil (16 episodes)

as Prime Minster's Adviser (16 episodes)

as Lee Hwang Eui

as Kevin Kim [Doctor] (2 episodes)

as Choi Young-soo (13 episodes)

as Yoo Ki-hoon (14 episodes)

as Hwang-ee

as Park In-hyeok (20 episodes)

as 1 Person Band

as Han Chang-soo

as Han

as Soo-jung's Older Brother

as 498