All you knew was he had some connection to a higher power and took over the Highmoon Brotherhood. In addition, there may have been some connection to Omaric and some strange happenings in Kythyss down south where rumours of a Necromancer and strange disappearances associated with a mist are whispered.

Now however, you have not only met his face, but have discovered he has an army and probably a White Dragon at his side, in which he would bring destruction to Alaron.

After some time, you defeated his army with an avalanche, slew his White Dragon, and eventually defeated Omaric himself. His body now lies somewhere unknown to the party thanks to Wilber teleporting it elsewhere.