Kai has had that scar on the side of his face for a while. This goes back to the days he was working as a bouncer in NYC. If i remember well, it was a patron that did it to him, with a knive or a bottle
WTF was he thinking pulling the Shaolin Monk haircut??
He said in an interview his hair style was based on the mortal kombat character goro.
That's a Barry Bonds-sized noggin he's sporting.