Jacky Cheung Hok-Yau

Character: Professor C.Y. Siu / Helios

Nick Cheung Ka-Fai

Character: Lee Yan Ming, Eric

Shawn Yue

Character: Fan Ka Ming

Chang Chen

Character: Gam Dao Nin / Messenger of Helios

Wang Xueqi

Character: Song An

Ji Jin-hee

Character: Choi Min Ho

Choi Si-won

Character: Park Woo Cheol

Janice Man

Character: Zhang Yijun / Messenger of Helios

Yoon Jin-yi

Character: Sin Mi Kyung

Joyce Feng

Character: Yuan Xiaowen (Chief Secretary of Mr. Song)

Philippe Joly

Character: Younger Mr. BIG's Thug

Kim Hye-yoon

Character: Park Woo Cheol's Sister

Kim Hae-sook

Character: Park Young Sook (Director of NIS)

Lee Tae-ran

Character: Yoon Hee Seon (Choi Min Ho's Wife)

Philip Keung Ho-Man

Character: Wong Kin Chung

Paul Fonoroff

Character: Martin Koo

Josephine Koo Mei-Wah

Character: Sophia

Ken Law Ho-Ming

Character: Lee Yan Ming's Subordinate

Jerry Leung Ho-Kai

Character: Lee Yan Ming's Subordinate

Tracy Chu

Character: Lee Yan Ming's Subordinate

Benny Li Shun-Yan

Character: Representative of Hong Kong Customs

Eric Chung

Character: Representative of LCSD

Ben Yuen Foo-Wah

Character: Representative of Transport Department

Timothy Cheng Chi-Sing

Character: Representative of Fire Services

Rachel Kan

Character: Representative of Hospital Authority

Suk-Yee Chan

Character: Director of Immigration

Gill Mohindepaul Singh

Character: Saad

Icy Wong

Character: Female Reporter

Ji Dae-han

Character: Korean Ambassador

Park Jeong-hak

Character: Marine Police of Korea

Eddie Ho Wai-Yip

Character: Fan Ka Ming's Subordinate

Luk Man-Wai

Character: Fan Ka Ming's Subordinate

Hedwig Tam

Character: Fan Ka Ming's Subordinate

Mike Leeder

Character: Younger MR. BIG / Older MR. BIG

Singh Hartihan Bitto

Character: Younger Mr. BIG's Thug

Semiquaver Iafeta

Character: Younger Mr. BIG's Thug

Zhang Chaoli

Character: Xiao Li (Senior Secretary of Mr. Song)

Gilbert Bae

Character: Manager of Raw Material Plant Factory

Frank K.H. Kim

Character: Manager of Raw Material Plant Factory

Kim Yanghyeong

Character: M.C. at Choi Min Ho's Son's Birthday Party

Ha Woojung

Character: Choi Myeong Gun (Choi Min Ho's Son)

Park Jaeyoung

Character: Choi Myeong Gun's Grandfather

Kim Hyunsook

Character: Choi Myeong Gun's Grandmother

Noah Wong Man-Nok

Character: Hacker

Duncan Cheung

Character: Hacker Assistant

Vincent Chi Mo-Chun

Character: Superintendent of Macau Police