Yeon Je-hyung

as Do-soo

as Park Hyun-woo (2 episodes)

as Kim Hyun-woo (16 episodes)

as Kim Gun-yeob (12 episodes)

as Kang Goon (16 episodes)

as Lee Jung Min (8 episodes)

as Bang Gook Bong [Sol Ah's step-brother] (24 episodes)

as Lee Ki-young (60 episodes)

as Kwon Chan Wook (32 episodes)

as Police Precinct Student 1

as Yeon Jae-Hyeong (12 episodes)