Here's the traits of the trash. There are two basic kinds of trash inside gruul's lair.  Brutes and Healers.  

Brutes will randomly charge a person that is not right near them.  This charge will cause the tanks to lose agro and the Brute will go and smash whoever is next on threat meter.Thus, it is absolutely 100% necessary for everyone  (even hunters) to stand right near him.  He also does a cleave so you do not want to be in front of him if you are not the tank.  The tank will stand with his tank back to the wall.  The brute will be facing the wall, and the raid should position themselves right around his behind.  Literally hug his butt. When fighting two brutes, both must be facing the same direction so the raid can get behind both.

When pulling this trash, the raid has to remain at the spots they're told. It's important not to trickle forward. The Brute charge effect kicks in depending on a certain proximity, so a random wandering raider can get people killed if he's not standing at the right place away from the add Brute's charge range.


Priests heal... so if there is more than one trash mob, the healer must be pulled aside from the others (either pulled away to be killed first or kept far from whatever is being killed).  The healer mob will also do a psychic scream that sends the tanks running.  It can be dispelled so priests/pallies should be watching for it and dispelling as necessary.