Messenger Gam Dao-Nin
Park's sister
Park Woo-cheol (as Siwon Choi)
Park Yung-sook (as Hae-suk Kim)
Insp. Lee Yan-Ming
Col. Choi Min-Ho (as Jin-hee Ji)
Messenger Zhang Yijun
Prof. Siu Chi-Yan
Fan Ka-Ming
Song An
Transportation Dept. Rep.
Younger / older Mr. Big
Yoon Hee-seon (as Tae-ran Lee)
Journalist
Shim Mi-kyung (as Yoon Jin Yi)
Korean Ambassafor (as Dae-han Ji)
Wong Kin Chung
Insp. Fan's Subordinate
Yuan Xiaowen
Marine Police of Korea
Mr. Big's Bodyguard
Mr. Big's bodyguard
Sophia
Mr. big's Follower
Hospital Authority Rep.
Mr. Big follower (as Samiquaver Iafeta)
Senior Secretary of Mr. Song
Macau Police Superintendant (as Vincent Chik)
Martin Koo
Hacker Assistant (as Duncan Cheung)
Fire Services Rep.
Director of Immigration (as Shuk-Yee Chan)
Park's Brother
Insp. Lee's Subordinate (as Tsin-Suet Chu)
Insp. Fan's Subordinate (as Eddie Ho)
Myeong-gun's Grandmother
Choi Myeong-gun (infant)
Materials Factory Worker
Materials Factory Manager
Birthday Party M.C.
Female Reporter (as Icy Wong)
LCSD Rep. (as Eric Chung)
Saad
HK Customs Rep.
Park's Mother
Myeong-gun's Grandfather
Hacker
Insp. Lee's Subordinate (as Ho-Kai Leung)
His Majesty
Insp. Fan's Subordinate (as Frankie Luk)