Apophis

Badb

Chaos

Cocidius

Dysnomia

Eris was the goddess of strife and discord, turned fairy tale and then popular culture figure Maleficent in Sleeping Beauty. Ironic, as her name sounds so much like that of Eros, the god of love. 
There is also a planet named Eris, discovered in 2005 and sometimes called the tenth planet.
Though not on the U.S. Top 1000 except for a brief appearance a century ago, Eris was given to 130 baby girls in 2022 and is rising along with the fashion for mythological names.

Eris

Emygdius

Hadad

An ancient Mesopotamian goddess of love, war and justice, with a name that fits modern tastes. In recent years it has become a rare but steady fixture near the bottom of the charts, and feels full of potential for parents looking for an offbeat name from mythology.

Inanna

Indra

Cute name but be warned: Kali is the Hindu goddess of destruction, the fierce side of the goddess Devi. 

But many parents don't know or don't care about Kali's dark side and see the name simply as a respelling of Callie. It might also be a short form of such names as the Greek Kalista, the Arabic Kalila, or the Indian Kalinda.

Kali

Louhi

Mattis was most popular in Scandinavia in the 2000s and 2010s, and is now seeing success in Germany. In the US, it's most familiar as a surname.

Mattis

The mythological Morrigan was the ancient goddess of war, often symbolized by a crow.  Besides being a name, this is also used as a proper noun preceded by an article: the Morrigan, defined as a monster in female form.  

The meaning of Morrigan has been related to both terror and greatness.  While some relate the name to Morgan of the Arthurian legends, Morrigan and Morgan are actually unrelated.

Morrigan

Medard

Nemesis

Pele is a female name in Hawaiian culture that could make a provocative choice for a modern girls. Others might think you named your daughter after the all-time great soccer player, but the simple, rare, and lovely name Pele has mythological roots.

Pele

In Greek mythology, Perses was a Titan and the father of Hecate, goddess of magic and the Underworld. His name derives from Ancient Greek pertho ("to destroy").

Perses

Sekhmet

Tartarus

Tiamat

Tlaloc

steerthestars's list "Deities and Saints of Chaos" of 24 great name ideas: Apophis - Tlaloc!

Deities and Saints of Chaos

These names have been pulled from the mythologies and hagiographies of various cultures, and represent saints, gods/goddesses of chaos, destruction and storms.