Haha! Yeah, he's one of the instructors under Per..! I think he looks like Ben Askren!

(the MMA fighter, google it, lol)
I don't know him well though, I just started training again, I've had a break for a couple of years. I started Bjj, then I switched gyms in order to train MMA instead. (I like the variety of striking and grappling)
That Bjj gym have some seriously good instructors..!

(I'm no expert, but I certainly have that impression) And they're all nice people!