Actor Jung-min Hwang, who plays the South Korean spy with the code-name 'Black Venus', said of the emphasis of playing his central spy character of Seok-young Park (aka Suk-young Park) in this film: "I spent a lot of time discussing his character with the director [Jong-bin Yoon], and we decided to approach it
almost like two separate characters, so that the acting for Park Suk-young would be different for
that of 'Black Venus'. For example, when operating in China or North Korea, he is 'Black Venus',
not Park Suk-young. He has his own distinctive look, actions and speaking style. I tried to
portray 'Black Venus' less as a spy, and more as a kind of businessman. In general, 'Black Venus'
and Park Suk-young speak different dialects, the South-eastern Gyeongsang dialect and a
standard dialect, so we can think of them as different people."
