This guy is not act like a normal mob. He will run up the hallway and will pace back and forth through the hallway as well as the hallway connected to it. Does not attack anyone for to long at most a swing or two then sprints off again. The lower it hp the faster he gets. He have a trample ability similar to Dark Ixion (meaning he run into you, you get hurt)Will sometime explode if he see you but seem to not be able to see anyone that is behind the alter. Easy fight if you have blm to nuke him. Will sometimes stand still and not do anything for about 6-10 sec. I suggest just leaving boss to roam the halls maybe putting dots on it and fight the dhouls behind the alter where Ellylldan can not reach you.
hellstorm ~ Quez.