Kim Kyung-nam

as Yang Do-kyung (16 episodes)

as Senior

as Yoo Dong Uk [Jo Hwa law firm former attorney] (1 episode)

as Self (8 episodes)

as Won Jong-soo (14 episodes)

as Self (1 episode)

as Min Woo-cheon (16 episodes)

as Han Ye-seul (50 episodes)

as Self (10 episodes)

as Kang Shin-jae (16 episodes)

as Teacher Yook

as Cheon Deok-Koo (32 episodes)

as Oh Dae-ki (32 episodes)

as Yoon Hyun-Moo (32 episodes)

as Hong Ki-Cheol (4 episodes)

as Lee Joon-dol (16 episodes)

as Sun-Ho's secretary (18 episodes)

as Self (2 episodes)