Characters played by Park Seo-joon
Hwang Ki-joon
Characters played by Kang Ha-neul
Kang Hee-yeol
Characters played by Ha-seon Park
Joo-hee
Characters played by Dong-il Sung
Professor Yang
Characters played by Yoo-ram Bae
Jae-ho
Characters played by Joon Go
[no data]
Characters played by Lee Ho-jung
[no data]
Characters played by Min-tae Kang
[no data]
Characters played by Si-Won Cha
Cadet at police academy
Characters played by Ji Won Han
Female student
Characters played by Hyun-Lim Jo
OB
GYN cleaning lady
Characters played by Kyu-baek Kim
Young-Choon's gang member
Characters played by Eunbi Lee
Bit part
Characters played by Moon-cheol Nam
OB
GYN Director
Characters played by Ahn Seong-Bong
Club security