Helios

Jacky Cheung Hok-Yau

Professor C.Y. Siu / Helios

Nick Cheung Ka-Fai

Lee Yan Ming, Eric

Shawn Yue Man-Lok

Fan Ka Ming

Chang Chen

Gam Dao Nin / Messenger of Helios

Wang Xueqi

Song An

Ji Jin-hee

Choi Min Ho

Choi Si-won

Park Woo Cheol

Janice Man Wing-San

Zhang Yijun / Messenger of Helios

Yoon Jin-yi

Sin Mi Kyung

Joyce Feng

Yuan Xiaowen (Chief Secretary of Mr. Song)

Philippe Joly

Younger Mr. BIG's Thug

Kim Hye-yoon

Park Woo Cheol's Sister

Kim Hae-sook

Park Young Sook (Director of NIS)

Lee Tae-ran

Yoon Hee Seon (Choi Min Ho's Wife)

Philip Keung Ho-Man

Wong Kin Chung