The Doors of Oerth
As too who, or what, the individual identified as Victor is per say, is unknown for sure, but it is known that he bares a tacit resemblance to a former companion of the Druid Oblivion.
His last known location was inside the hold of The Hammer Ship wrecked in Crocodile Bay. He is surrounded by ghouls. The Necromancer was known to specifically have a hatred for ghouls so it is especially perplexing that he would be accompanying them, however he may have simply changed his mind about using them.