He's not social with the mobs around him. He's a 72^^^ Heroic underconDefiler, make sure you stifle/stun his spells which are poison based and do 2-2.5k depending on resists. Respawn time is 10 minutes.
A good spot to pull him to is ( -863, -118, 341 ) Copy/waypoint -863, -118, 341.