Outer Darkness

The Outer Darkness is a region that exists outside of space, time, and reality itself that can only be accessed by traveling through the void. The Outer Darkness is home to fallen angels; primordial monsters, and souls dammed by the One God. This place is said to be more terrible than Tartarus. Human minds aren't capable of comprehending the true form of this world so it will look differently to every mortal who comes here. Lord Samael and Lady Chaos are the rulers of this realm.

13 Arch-demons
The 13 Archdemons are a group of super-powerful entities that rule over the outer darkness underneath Lady Chaos. Fortunately for the multiverse about half of the Arch-demons are imprisoned somewhere.

The Inner Circle: 7 Infernal Princes
Samael the Proud

Leviathan: Envy (imprisoned)

Beelzebub: Gluttony

Asmodeus: Lust (imprisoned in Egypt)

Belphegor: Sloth (asleep)

Behemoth: Wrath (imprisoned)

Middle Ring:
Azazel the watcher (imprisoned in the earth with his hands, feet, and winds bound)

Abaddon the destroyer (imprisoned in the bottomless pit)

Belial the deceiver

Outer Ring:
Mephistopheles: the soul dealer

Lilith: the night mother

Moloch: the child killer

Locations
There are very few constant and corporeal locations in the Outer Darkness but they do exist and they include the following.

Pandemonium City
Capital of the Outer Darkness and city of Fallen angels

Dis City
The city of Dammed souls.