Traitor Gluk is a master Pet Tamer located in front of Dire Maul in Feralas. He is in a small camp with his level 13 battle pets: Rasp (Beast), Prancer (Critter), and Glimmer (Dragonkin). He sometimes kicks Rasp while trying to train the snake. Prancer is kept in a cage behind him. Glimmer is behind the tree at the back of the camp.
Defeating him is required to complete the [Taming Kalimdor] and [Taming Azeroth] achievements.
No! Smash! I said smash!
- Traitor Gluk says: Stupid snake. I said shoot fire!
Given his name, he was likely part of the Gordunni tribe, but no longer.