What's Wrong With Secretary Kim

Park Seo-jun

Lee Young-joon

박민영

Kim Mi-so

이태환

Lee Sung-yeon

표예진

Kim Ji-a

김혜옥

Madame Choi

김병옥

CEO Lee

강기영

Park Yoo-sik

Kang Hong-suk

Yang Cheol

황찬성

Go Gwi-nam

김예원

Seol Ma-eum

Lee Yoo-jun

Jung Chi-in

황보라

Bong Se-ra

Baek Eun-hae

Kim Pil-nam

Heo Soon-Mi

Kim Mal-hee

Kim Jung-woon

Park Joon-hwan

Lee Jung-min

Lee Young-ok

서효림

Yoo-sik's Ex-wife

문우진

Lee Young-joon / Lee Sung-hyun

Kim Ji-Yu

Young Kim Mi-so

Bae Gang-Yoo

Young Lee Sung-yeon

홍지윤

Oh Ji-Ran

조덕현

Mi-So's father

배현성

Bae Yun Sung [Intern]

고세원

Chairman Lee [Yeong Joon's father - Young]

이수경

Mrs. Choi [Young Joon's Mother - Young]

박병은

Park Byung-Eun

Choi Na-Moo

Woman at the Spanish Embassy party

Song Yi-jae

Woman who receives hat from Lee Sung Yeon on airplane

Lee Do-yeon

Journalist

Park Tae-yun

Claw machine schoolboy

Choi Hee

Host of the book concert

정수영

Agency staff

Michal Spasov Ashminov

Himself

정소민

Mi So's mother

이민기

Mi So's father

Choi Hyeon-woo

Himself

손성윤

Kidnapper

Chae Yoo-Ri

Child holding a doll outside Kim Mi So's room

길해연

Woman at the reserved parking space

Jung Myung-Joon

Psychiatrist

Yu-mi Jung

Young Joon's friend

Lee Se-young

Staff who talked behind Kim Mi So's back

Kim Ga-yeon

Staff who talked behind Kim Mi So's back

Lee Byung-joon

Jang Jeong Do [Fashion Designer]