Main Characters
Son Hyuk
20 main appearances
Yoon Hye In
20 main appearances
Lee Jung Woo
20 main appearances
Kim Joon Ho
19 main appearances
Kim Ki Soo
19 main appearances
Recurring Guest Characters
Kim Myung Guk
7 guest appearances
Park Suk Ho
7 guest appearances
Jerome
7 guest appearances
Young Min
7 guest appearances
Jae Hyuk
7 guest appearances
Jang Ki Suk
6 guest appearances
Young Mi
5 guest appearances
Choi Tae Hyun
5 guest appearances
Nam Dong Shik
4 guest appearances
Jin Young
4 guest appearances
Kim Ho Gyun
4 guest appearances
Yoo Kang Ho
3 guest appearances
Jo Soo Young
3 guest appearances
Suh Min Hyuk
3 guest appearances
Chul Kyu
3 guest appearances
Special Agent B5
2 guest appearances
Viktor Sevcenkov / Sasha
2 guest appearances
BoA
2 guest appearances
Han Jung Sook
2 guest appearances