Kang Hwi-rim (12 episodes)

Choi Cheol-Min (Eps 4) (1 episode)

Park Do-hyeon (1 episode)

Kim Hyung Joo (16 episodes)

Seo Yun-o (10 episodes)

Cho Shi-young (16 episodes)

Crown Prince Sado (17 episodes)

Jo Seung-Jun (16 episodes)

Lee Jae Hwa (16 episodes)

(1 episode)

Jang Woo-Sang (16 episodes)

Joo Se Hoon (51 episodes)

(4 episodes)

(2 episodes)

Jo Gun (12 episodes)

Yoo Tae-joon (20 episodes)

Ma Do-jin (40 episodes)

Choi Ho (16 episodes)

(15 episodes)

Chi-Soo's friend (16 episodes)

(1 episode)