Rob's Greyhawk Undying Wyrms
Once an ur-flannae scholar taught magic by the elves,he corrupted the gift, invented necromancy, then turned on his former teachers, destroyed several of their cities and created the Empire of the Spider Throne, with himself as emperor. After that, his overweening ambition led him first to become the first lich and then to seek godhood. His mortal form was slain by an underling, but he nevertheless achieved his ambition.
Today ‘V’ is a member of the pantheon, on the side of evil (ie his own side more often than not) and is among those deities most hated by the elves.
At one point he was one of the deities associated with the Ebon Triad, but this may not still be the case.
His 2nd general is held in a stone sarcophagus in a castle nearKnurl (we actually saw the sarcophagus, as well as a great vault of vecna)