SEE ALSO: Lee Byung Hun cast in his next Hollywood film 'Terminator 5'

His agency BH Entertainment rep stated, "[Lee Byung Hun] recently left for the States and joined the production crew, and started his first filming."

"His character and specific details are kept under wraps. Due to the Hollywood system, it would be difficult to reveal it beforehand. As much as fans are looking forward to it, he will show a good image." Although the specifics won't be revealed until later, it has been rumored that he has an important role.

'Terminator 5' is directed by Alan Taylor and will also feature appearances by the terminator himself, Arnold Schwarzenegger. 

Skydance Productions also revealed a BTS photo of the movie's clapperboard to signal the start of the filming, which you can see below.