Grimbooze Thunderbrew is a level 20 quest giver located in the Dagger Hills in the human territory of Westfall. He seems to have gone completely mad since he constantly speaks in rhymes.
He starts the following quests:
See List of Westfall NPCs.
Wrath of the Lich King Edit
In World of Warcraft: Wrath of the Lich King he has joined Hemet Nesingwary's expedition to Sholazar Basin in Northrend, where he asks players to help him make a new brew.
See Sholazar Basin NPCs.