Pemeran Woman of 9.9 Billion

Cho Yeo Jung

as Jung Seo Yeon

Pemeran Utama

Kim Kang Woo (김강우)

as Kang Tae Woo

Pemeran Utama

Oh Na Ra

as Yoon Hee Joo

Pemeran Utama

Lee Ji Hoon (이지훈)

as Lee Jae Hun

Pemeran Utama

Jung Woong In

as Hong In Pyo

Pemeran Utama

Ok Ye Rin

as Lee Yoo Ri

Pemeran Pembantu

Seo Hyun Chul

as Oh Dae Yong [Ceo]

Pemeran Pembantu

Yoo Young Jae

as Kim Suk [Hacker]

Pemeran Pembantu

Shin Su Hyun

as Ji Ha Na [Bartender]

Pemeran Pembantu

Yang Hyun Min

as Kim Do Hak

Pemeran Pembantu

Kim Do Hyun

as Seo Min Gyu [Executive director]

Pemeran Pembantu

Lee Byung Hoon

as Park Joon Bae

Pemeran Pembantu

Gu Sung Hwan

as Heuk Gom / Black Bear [Businessman]

Pemeran Pembantu

Yoon Ah Jung

as Yoo Mi Ra [Photographer]

Pemeran Pembantu

Jung Sung Il

as Baek Seung Jae

Pemeran Pembantu

Im Tae Kyung

as Leon / Daniel Kim

Pemeran Pembantu

Yoon Seo Hyun

as Jo [General manager] (Ep. 15)

Pemeran Pembantu

Park Sang Hwi

as Lee Sang Chul

Pemeran Pembantu

Kim Byung Gi

as Yoon Ho Sung [Hee Joo's father]

Pemeran Pembantu

Kil Hae Yeon

as Jang Geum Ja [Seo Yeon's mentor]

Pemeran Pembantu

Hyun Woo (현우)

as Kang Tae Hyun [Kang Tae Woo's brother]

Pemeran Pembantu

Kim Seung Wan

as [Policeman]

Bintang Tamu

Jang Eui Don

as [Korean-Chinese guy] (Ep. 18)

Bintang Tamu

Yang Seung Ri

Bintang Tamu

Han Sang Chul

as [Key repairman]

Bintang Tamu

Jeon Jeong Il

as [Factory president]

Bintang Tamu

Kim Dae Kook

as [Police officer]

Bintang Tamu

Kim In Cheol

as [Staff member]

Bintang Tamu

Kim Nam Ho

as [Detective]

Bintang Tamu

Gu Yun Hoi

as [Dealer]

Bintang Tamu

Seo Ei An

as [Leon's subordinate]

Bintang Tamu

Kwak Gi Hun

as [Black Bear's subordinate #3]

Bintang Tamu

Kim Geun Yeong

as [Mi Ra's mother]

Bintang Tamu

Kim Young Jo

Sutradara

Han Ji Hoon

Screenwriter