M'uru is a fallen naaru and former guardian of Tempest Keep. After his defeat in Tempest Keep, Kael'thas and his felblood minions captured M'uru from Silvermoon and took him to the Sunwell Plateau, presumably to drain his power and aid in the summoning of Kil'jaeden. As such, he is now the fifth boss of the instance.

This NPC can be found in Sunwell Plateau.