Hypnos (Saint Seiya)

Hypnos is one of the antagonist deities featured in the universe of the Manga Saint Seiya. As in Greek mythology, he is the personification of sleep and slumber, and the twin brother of Thanatos, the Greek god who personifies death and mortality. In Kurumada's mythos, although he is a subordinate of Hades, the Emperor of the Darkness and ruler of the Underworld, he is a deity with all attributes, and as his lord, he is a sworn enemy of the protector goddess of the Earth, Athena.

The Phantom's Apprentice
Hypos and Thanatos debute as co-leaders of The Necromancer Empire.