Trope the Filth-Belcher is a level 70 quest giver located at the Dragonmaw Base Camp in the contested territory of Shadowmoon Valley. He is friendly to players who have completed  Blood Oath of the Netherwing.
He starts the following quest at honored reputation with Netherwing:
-  Dragonmaw Race: Trope the Filth-Belcher
See: List of Shadowmoon Valley NPCs