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-bon

Jun Ji Yeon

Song Ok-suk

Mi Young's mother

Oh Sol-mi

Kim Mi Suk