Roach
This NPC can be found in Desolace (18), Western Plaguelands (16), Ahn'kahet: The Old Kingdom (15), The Culling of Stratholme (9), Icecrown Citadel (10), Stonetalon Mountains (7), Grizzly Hills (7), Azjol-Nerub (12), Mulgore (1) and Howling Fjord (1).