Lucif is Lucia's father who left before she was born to find the path to the True World. His past is filled with mysteries, and Nahashi refuses to talk about the subject with Lucia. In the anime, it is thought he turned himself into a Virus so he could obtain the True World. In the manga, it appears that Aion possessed him.
Lucif is a very driven individual.
He has brown hair, and wears a long red and yellow coat with dark pants and black boots. In his last appearance within volume 8 of the manga Lucif is seen in a long black robe. And aswell being noticably older with a heavy aftershadow