Once a fallen angel, Zepar is thought to now be one of the great dukes of hell. He is depicted as a soldier with red armor.

The name of two figures in Norse mythology: one the father of Nótt, the personification of the night; the other a son of Loki and Sigyn, who is transformed into a wolf (or killed by one, depending on your source). The name may mean "narrow", or possibly "demon of the dead".

Shax is a demon known as a Great Marquis of Hell, ruling over legions of demons. He is typically depicted as a stork.

Niya is an alternative name for Lilith, a demon or goddess in mythology. Niya is still worshipped today in a cult located in parts of Eastern Europe.

Lucifer not cool enough for you? Then you might want to pivot to this arguably badder-boy alternative with the X in the middle. Bonus advantage: Nickname Lux.

Moloch is a name and term that appears in the Hebrew Bible several times. Moloch is thought to be a deity whose practices include child sacrifice.

A phrase used in versions of the Bible, possibly referring to Satan.

In Egyptian mythology, Amun was a major god who later merged with Ra, becoming Amun-Ra. He is the creator deity and was worshiped as Ammon by the Greeks.

In Greek mythology, Empusa is a shape-shifting female being commanded by the witch Hecate. She is said to seduce and feed on young men.

Ravana is a multi-headed demon-king of Lanka in Hindu mythology. Ravana has ten heads and twenty arms, and can shape shift.

Lamia is a name with two very different images: from its Arabic roots, it is a bright yet gentle choice with a glowing meaning. As a Greek name however, Lamia appears in mythology as a child-eating monster, who was driven to madness after Zeus's wife Hera took her children away. This latter figure is the inspiration behind the Keats poem of the same name.

An axe-wielding Filipino demon.

A pretty Roman name, but unfortunately also the English vocabulary word mania. Spelling it Manya would avoid the issue.

Radna is known in demonology as the demon of greed and envy.

Eisheth is thought to be the personification of sin, said to eat the souls of the damned in Jewish mythology.

Kishi is a common Japanese surname. Kishi is also a two-faced demon in Angolan folklore, as well as a separate figure in the Bible.

This demon name from the anime Demon Slayer: Kimetsu no Yaiba, was one of the highest debuts of 2021, when it was given to 20 baby girls. It rose to 29 girls in 2022.

The Spanish word for "devil" makes for a very daring baby name, but in the era of babies names Hades, Azrael, Loki and even Lucifer, it feels like a plausible possibility. Indeed, 5 baby boys were named Diablo in 1975 – the only year the name has made the US extended list for either sex.

The Greek equivalent of Abaddon — both a place name (that of an abyss) and a demonic angel that lives there.

In the Book of Genesis, Arioch is the King of Ellasar.