Roach
This NPC can be found in Razorfen Downs (26), Desolace (21), Auchindoun: Mana-Tombs (17), Western Plaguelands (16), Ahn'kahet: The Old Kingdom (15), Ruins of Ahn'Qiraj (13), Ahn'Qiraj Temple (15), The Culling of Stratholme (9), Howling Fjord (8), Icecrown Citadel (10), Stonetalon Mountains (5), Azjol-Nerub (12) and Maraudon (1).