Recently, 'Four Men' released some photos of Park Hae Jin changed into the character named 'Chen' in the drama.
The story of 'Four Men' begins with a man who happens to meet other men who look exactly like him during the investigation of his mother's mysterious death.
In the drama, Park Hae Jin will be playing four different roles, including a professional killer 'Chen'.
'Chen' is heartless, and likes getting his job done quietly and fast.
In the first two released photos, the actor's cold-blooded character is clearly shown.
![Park Hae Jin](http://img.sbs.co.kr/newimg/news/20180523/201184902_1280.jpg)
![Park Hae Jin](http://img.sbs.co.kr/newimg/news/20180523/201184903_1280.jpg)
These pictures are making everyone wonder why he behaves differently when he is with the puppy.
![Park Hae Jin](http://img.sbs.co.kr/newimg/news/20180523/201184900_1280.jpg)
The crew went on, "Ppo-song-e would growl at all the staff and directors who gave him/her some snack, but he/she would turn into a quiet, cute puppy when Park Hae Jin came about."
![Park Hae Jin](http://img.sbs.co.kr/newimg/news/20180523/201184901_1280.jpg)
(Lee Narin, Credit= Mountain Movement Story, Mountain Movement)
(SBS Star)