Demons are an unusual species known far and wide across the Universe, most if not all of them originating the the Separ Dimension. Among countless members of the demon race are all seven Princes of Hell, as well as Ao Oni and Eny.
The majority of known demons have dark horns, of varying appearance. Their skin is usually within a shade of their auric colour. Their eyes are usually black instead of white, or of a full colour.
- Ao Oni X
- Mercuron Shamdon Kao
*Demidemons, or hybrids of a demon and another species.