Jang Hyuk
Lee Gun

Jang Na-ra
Kim Mi Young / Ellie Kim

Choi Jin-hyuk
Daniel Pitt

Wang Ji-won
Kang Se Ra

Park Won-sook
Chairwoman Wang

Choi Dae-chul
Chief Tak Gu Dae

Choi Woo-shik
Lee Yong

Na Young-hee
Yong's mother

Jang Kwang
"Dr. Octopus" Mun Min Seok

Park Hee-von
Jun Ji Yeon

Song Ok-suk
Mi Young's mother

Oh Sol-mi
Kim Mi Suk

Lee Mi-do
Kim Mi Ja

Jung Eun-pyo
President Park

Lim Hyung-jun
Mr. Choi

Seol Woo-hyung
Dae Cheol

Jung Han-hun
Lee Seong Mok

Park Jin-woo
Lawyer Hong

Yang Geum-seok
Se Ra's mother

Kim Yeong-hoon
Min Byeong Cheol