Kim Jin-woo

as Jang Ki-yoon (105 episodes)

as Choi Kang-Jin (16 episodes)

as Mo Wan-joon (16 episodes)

as Goo Jin-Sung (2 episodes)

as Lee Soo-Ho / Park Do-Kyung (105 episodes)

as Cha Tae-Hoon (40 episodes)

as Kang Hae-wook

as Yoon Yoo Noh (10 episodes)

as Oh Tae Ji (10 episodes)

as Kang Suk-Kyoo (20 episodes)

as Seo In-Woo (125 episodes)

as Jang Hee Sun

as Seo Jae-young (16 episodes)

as Woo Sang-woo

as Lee Soo-Ho (115 episodes)

as Han Dong-min (16 episodes)

as Won Bin (16 episodes)

as Ha Kang Soo (2 episodes)

as Bae Yun-Woo (50 episodes)

as Kim Soo-hyuk (20 episodes)

as Choi Sung-Min (1 episode)

as Young-ho