Hyun Bin
Goo Seo-jin / Robin (20 eps)
Han Ji-min
Jang Ha-na (20 eps)
Sung Joon
Yoon Tae-joo (20 eps)
Lee Hye-ri
Min Woo-jung (20 eps)
Lee Seung-joon
Kwon Young-chan (20 eps)
Han Sang-jin
Ryu Seung-yeon (20 eps)
Shin Eun-jung
Dr. Kang Hee-ae (20 eps)
Lee Duck-hwa
Chairman Goo Myung-han (20 eps)
Kim Do-yeon
Han Joo-hee (20 eps)
Kwak Hee-Sung
Sung Seok-won (20 eps)
Lee Se-na
Choi Seo-hee (20 eps)
Kim Kyung-Jin
Director Kim (20 eps)
Lee Jun-hyeok
Detective Na Moo-jin (20 eps)
Lee Won-keun
Lee Eun-chang (20 eps)
Oh Na-ra
Cha Jin-joo (20 eps)
Maeng Sang-hun
CEO Min (20 eps)
Mun Yeong-dong
Park Hee-bong (20 eps)
Choi Soo-han
Robin (Young) (20 eps)
Heo Jung-eun
Jang Ha-na (Child) (20 eps)
Jung Ji-so
Jang Ha-na (Young) (20 eps)
Hwang Min-Ho
Ahn Sung-geun (20 eps)
Jin Hyun-kwang
Jung Man-shik (20 eps)
Do Sang-woo
Yoo Tae-joon (20 eps)
Kim Ji-eun
Myung-han's secretary (20 eps)