This is a named mob in the Plane of War. For an overview of all nameds in the Plane of War, their PHs, map points, and mapped locations, see this quest entry.
Weird that this thing has the stats of a T3 RoF raid range, has the same clicky as one, and then the improved dodge is 2 levels below a t1 ROF range - huh?
Slave Driver Thokk coils up his whip and aims for your head. You should duck. For this emote you of course duck. If you do not follow the emote then you will be death touched.
Slave Driver Thokk's whip passes harmlessly overhead. This is the emote saying it is safe to stand again.
He did these emotes for us from 100-60 and then 30-0 i think. I ran a pu raid and killed him with 3 groups which was complete overkill. He had around 57 million hp. He dropped Brainsmasher and Sigil of Thokk.