Kil Yong-woo

as Seo Jong-soo (12 episodes)

as Yoo Myeong-gi (16 episodes)

as Han Kwang-Hoon (105 episodes)

as Choi Jae-hak (80 episodes)

as Jung Hye-Mi's father (16 episodes)

as Choi Dong-Joon (123 episodes)

as Ji Hyun's father (20 episodes)

as Charles Wang / Wang Chul-Soo (129 episodes)

as Yoon Won Sup (51 episodes)

as Bo Jang-wang (134 episodes)

as Shin Sung-chul (16 episodes)

as Yun Chi-ho

as Jang Hee Jae (63 episodes)