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

강홍석

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

Moon Woo-jin

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]

Park Byung-eun

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

최현우

Himself

손성윤

Kidnapper

Chae Yoo-Ri

Child holding a doll outside Kim Mi So's room

Kil Hae-Yeon

Woman at the reserved parking space

Jeong Myeong-jun

Psychiatrist

Yu-mi Jung

Young Joon's friend

이세영

Staff who talked behind Kim Mi So's back

김가연

Staff who talked behind Kim Mi So's back

Lee Byung-joon

Jang Jeong Do [Fashion Designer]