TheWoWDBThis rare, together with Abesha (The Snowbringer) is very difficult to find and is only spawned as a "rare event" (quoting GM).
This might be interpreted as a rare world quest spawn, however there are currently no sources linked to such world quest currently existing in-game.
Doing Adventurer of Highmountain, I contacted a GM in order to figure out where to find these, and this has been confirmed - http://i.imgur.com/rsRZKYN.png
Rare
Bruiser
Champion Chomper
The highest voted Wowhead comments for this page. They are community notes, not TheWoWDB comments.
Not in there as of live
Might be like Oubdob, and only up when there's a world quest for his death.
Details
This roster comes from the current game client's data files, so it is not a complete list of every NPC in the game - older world NPCs that are no longer in the modern client are absent.
Hunter Pet: Basilisk
Bruiser belongs to the Basilisk creature family, which Hunters can tame; its pet specialization is Cunning. The Basilisk diet in the client data: Meat and Fish. The Basilisk family’s own pet skill line (Pet - Basilisk) teaches 2 abilities:
More Basilisk
Other creatures in the Basilisk family. See the whole family.
Community notes from Wowhead · 12 comments
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Level and Map Tracking
The game data tunes Bruiser for levels 10 to 45, Legion content.