Three NPC Humes will spawn behind the Mamool Ja, Wabjahl, Jasweem, Tiyaash, they will attack the Mamool Ja and run around in circles. The battle will end if all of them are defeated. Therefore it's difficult to solo the BC unless you have very high damage output and can survive the BLM's nukes.
You cannot cure them, and the mobs will often focus their attacks on them, regardless of hate.
The monsters are extremely weak to a level 75, easily duoed by a mage and melee.