Shim Soo-ryun (48 Episodes)

Cheon Seo-jin (48 Episodes)

Oh Yoon-hee (48 Episodes)

Joo Dan-tae (48 Episodes)

Kang Ma-ri (48 Episodes)

Lee Gyu-jin (48 Episodes)

Ha Yoon-chul (48 Episodes)

Logan Lee (48 Episodes)

Go Sang-ah (48 Episodes)

Ma Doo-gi (48 Episodes)

Bae Ro-na (48 Episodes)

Yoo Je-ni (48 Episodes)

Joo Seok-hoon (48 Episodes)

Joo Seok-kyung (48 Episodes)

Ha Eun-byeol (48 Episodes)

Lee Min-hyeok (48 Episodes)

Secretary Jo (48 Episodes)

Secretary Do (48 Episodes)

Jin Boon-hong (27 Episodes)

Anna Lee / Min Seol-ah (21 Episodes)

Cheon Myeong-soo (21 Episodes)

Attorney (21 Episodes)

Yoo Dong-pil (15 Episodes)

Baek Joon-ki (15 Episodes)

Soo-ryun's ex husband (3 Episodes)

Reporter Son Hyung-jin (2 Episodes)

Jung Doo-man (2 Episodes)

Seo Young's husband (1 Episodes)

JohnBIO Conference Attendee (1 Episodes)