Kithicor is a Ranger like most in this zone. I aslo tried to hail him, with no luck, I assume a Ranger can get something out of him.
The good news for Rangers though is that he is a trainer, I right clicked on him and he said I was not of the Ranger class, begone!
Thumper is a big brown bear and I also assume that he is Kith's pal, like the Barb and Iceberg in Everfrost.