Oh Chang-seok

as Kim Seon-jae (125 episodes)

as Baek Seong-yoon (104 episodes)

as Kang Ji-ho (119 episodes)

as Kang Ji Hoon (10 episodes)

as Oh Tae-Yang / Kim Yoo-Wol (104 episodes)

as Min Tae-Joo (16 episodes)

as Kang Joon-Hyuk (18 episodes)

as Self (1 episode)

as Oh Geun-baek (1 episode)

as Yoon Bin

as Cha Do-hoon (26 episodes)

as Lee Jae-hee (52 episodes)

as Hwang Ma-ma (150 episodes)

as Self (1 episode)

as Park No-Kyung (175 episodes)

as 朴盧慶 (1 episode)

as Young-soo