The Penthouse

Lee Ji-ah

Shim Soo-ryun

Kim So-yeon

Cheon Seo-jin

Eugene

Oh Yoon-hee

Uhm Ki-joon

Joo Dan-tae

Shin Eun-kyung

Kang Ma-ri

Bong Tae-gyu

Lee Gyu-jin

Yoon Jong-hoon

Ha Yoon-chul

Park Eun-seok

Logan Lee

Yoon Joo-hee

Go Sang-ah

Ha Do-kwon

Ma Doo-gi

Kim Hyeon-soo

Bae Ro-na

Jin Ji-hee

Yoo Je-ni

Kim Young-dae

Joo Seok-hoon

Han Ji-hyeon

Joo Seok-kyung

Choi Ye-bin

Ha Eun-byeol

Lee Tae-vin

Lee Min-hyeok

Kim Dong-Kyu

Secretary Jo

Choi Seo-yeon

Kwon Hye-mi

Kim Do-hyeon

Secretary Do

Ha Min

Kang Ok-gyo

Cheon Hee-joo

Noh Ji-a

Ahn Yeon-hong

Jin Boon-hong

Kim Ri-won

Maid Ann Ji-min

Jo Soo-min

Anna Lee / Min Seol-ah

Jeong Seong-mo

Cheon Myeong-soo

Choi Yu-ha

Attorney

Na So-ye

Joo Hye In

신한결

Female Staff

Park Ho-san

Yoo Dong-pil

On Ju-wan

Baek Joon-ki

안은호

Ahn Eun Ho [Cheong Ah student]

Ki Tae-hwa

Soo-ryun's ex husband / Soo-ryun's ex-husband

Lee Sang-woo

Reporter Son Hyung-jin

Yu Jun-sang

Jung Doo-man

Lee Na-ra

Baek Joon-ki's Mother

Ahn Tae-hwan

Seo Young's husband

Bret Allan Lindquist

JohnBIO Conference Attendee

Yoon Seung-hoon

Detective

Jeong Yoon-hee

Reporter

Lee Yeon-su

Chorister

Hyeon Eun-yeong

Neighborhood resident #1

Lee Jung-hyoung

[Investment advisor]