I found the Bwgan Hunter! The location I found ,him at was: 24127,23671,2173 which is just east along the shoreline from the bwgan camp where you can find the bwgan fisherman and the bwgan named "Ifor". The bwgan Hunter was yellow to me at level 25 and an easy kill for this Merc. He seemed to be followed by 2 more bwgan hunters and a bwgan fisherman, but they didn't aggro when I attacked him with my bow to draw him away. Also, the 4 of them wandered east along the shoreline for about 10-15 seconds before returning from their "patrol", so if you don't see him right away at the location above, just wait for him near the stone sticking out of the ground just east of the bwgan camp (and look towards the lake to see him and his buddies coming).