I dont know about the Douses, but I had a quest on Beta, that I had picked up from one of the NPC's on Port Royal, to defeat Flotsams. For the longest time I had no idea where to find them, nor did anybody I knew. I finally dropped the quest, and later learned they are a type of character found only in the cave on Isla Tormenta (which I would never have been able to kill at the time I took the quest, and might have a hard time killing now).
Anyway, good luck.
