What's the truth Song Seung Hun?

If you try Song Seung Hun , that comes first in my mind is the actor that always acts as mellow and serious figure (Drama: Autumn story, East of Eden, Summer Scent ; Movie: So Close, Ghost remake ). 

As Bae Yong Jun and Rain , it has its own talent agency that is Storm S , where there are several well-known artists who are under the patronage that is Lee Young Ae (Dae Jang Geum) and Kim Jung Eun (Chocolate, I am Legend).

From nicknamenya alone is tough guy . But it really so? What will happen to it if the tough guy do this?

"Nyaaa .. her .. her .. nyaaa .. her .."

Or this?

"It's chicken dance, honey!"

Maybe it is just the interpretation of Song Seung Hun will figure Hae Young. But still remember how it was time for the scene kocaknya treat Lee Seol in his house?

It turned out that was not the only oddity Song Seung Hun makes filming so add more atmosphere. When filming the scene rescue Lee Seol on campus, where the scene is actually Hae Young is very angry because it is concerned about the safety of Lee Seol-chasing journalists pursued the campus, and Hae Young invited lecturer in space. 

When training, Song Seung Hun said to mimic rather than anger: "Because you make me afraid!", But it is even joking and top it jump around like a kid with a whine: "You make me iirr khawatii .. .."

And when training with Kim Tae Hee for scenes where he teaches relaxation time voice count, what is Song Seung Hun on Kim Tae Hee? [At minute 4:20]

"Boring, yes .. How about we just kiss?" Kim Tae Hee and even shriek with laughter.

Hihihi .. If only PD nymphs hearken Song Seung Hun ..

He said, while on location filming, Song Seung Hun is known as a formal and serious figure. This is different when it is shooting My Princess. With filming a chase playback system, could make the actors and the production crew became moody and tense. But Song Seung Hun be figure who loves to joke around, make the atmosphere at no grueling filming locations. 

So, what does this figure actually Song Seung Hun? Or it just happened because ..