Gulbannan was one of the truly ancient Old Ones. He was a master of many crafts, many magics. Some even say that he combined the arts of the Forge Makers with those who focus on the genesis and shaping of the living.
Lilith seduced him and he became her paramour, though in reality she was merely using him to learn his secrets. His fellow Makers ostracized him for his involvement with the demoness. When he grew worried over what Lilith had learned and decided to inform his fellow Makers, his own apprentice, Belisatra, murdered him in the hopes of seeing what Lilith would create.