*UPDATE*
With the recent release of beta for Koreans and America (California only), there have been literally tons of new videos and pics.
Here is a beta video of a boss fight. Now need I remind you, this is BETA! The AI isn't up to snuff yet so it looks like it's tripping off drugs or something.
I have named this boss, "George". Ofcourse- since the beta is out, he probably already has a name.