Demons

 'Demons' is the umbrella term meant to refer to the several supernatural creatures that inhabit Hell. Demons are often classified by two subterms; Sinners, who were once previously human and have since been reincarnated after death, and Hellborns, demons that exist naturally through means such as birth, and were never previously human. Hellborns are also referred to as Natural Demons, as a demon doesn't have to have been born in Hell to classify as one.

Supernatural entities do not have to look like the archetypal devil in order to be classified as a demon. Creatures such as spirits are still considered demons, despite them straying far from the common devil appearance.

Description
Demons come in all shapes and sizes. Their physical forms typically have characteristics associated with the human body, but with some variations-- such as pointed ears and a lack of a nose. Most demons are humanoid in appearance, anthropomorphic, though there are a number of cases of feral demons such as Bandage, as well as spirits that look more akin to the archetypal "blanket ghost", such as Crux.

While abilities tend to vary, the majority of demons are naturally skilled magic users. All demons have heightened defenses and typically don't die easily, especially compared to humans, but they aren't immortal and can still be cleansed either through demonic magic or drastic means that would have killed them if they were human. After a demon is killed, they cease to exist; never leaving behind a body for long. Instead, a demon's body will shortly turn to dust upon death, as the magical energy residing in them scatters. While the demon themselves are dead, their essence can occasionally bring life to objects it comes into contact with, as is the case of Thistlecrown, who was created after a flower demon's dust landed on a bed of flowers.

In terms of aging, Sinners will more likely than not remain the age they died in as humans, though exceptions can be seen. Hellborns will always age, as shown by Grax, who was once a child. Hellborns age slower than humans do, and far exceed their lifespans, but are not immortal themselves.

Appearance
Demons tend to have an overarching theme to their design. They can resemble plants, animals, real world structures (such as Alabaster being based on gargoyle statues, and Lumin being based on the Eye of Providence), people, and more, coming in a wide array of colors, appearances and sizes based on what creature their character is based on.

While Hellborns will more likely look like their parents or creators, the appearances of Sinners are heavily individualized and are often based off of the Sinner's personality, death, origins, or even surroundings of where they died. Examples would include Lycoris Spiderlily, who became a flower demon due to her gardening career as a human, or Lumin, whose Eye of Providence appearance was a result of her sins at church.

Abilities
Most, if not all, demons have some of the following traits:


 * Transformation: Demons can usually transform, either having an alternate form, such as Lumin's variety of bodies, or have an ability that involves them changing their body, such as Alabaster's rock transformation. A smaller scale of this is also present in which demons can transform select part of their bodies, such as Mortis' ability to turn his index finger into a key.
 * Summoning: A lot of demons have the ability to summon objects, such as Widow's daggers, or the ability to summon creatures, such as Grax's Little Lucifers.
 * Non-Senescence: Demons do not age, and thus do not die of old age and most of the other natural causes that kill humans. However, they can still be killed, such as by magic or infections.
 * Unique abilities: Demons have a wide range of abilities that are exclusive to certain demon types or individual demons.

Sinners

 * Alabaster Igneous
 * Bandage
 * Hugo 'Ego' Egregore
 * Honey Glaze
 * Jack Cull
 * Juniper Basille
 * Lumina Brooks
 * Lycoris Spiderlily
 * Meiyo Ushinatta
 * Molly 'Snake-Eyes' Martingale
 * Widow Valentine

Hellborn

 * Aeshma
 * Amilia
 * Blight
 * Duple
 * Grax
 * Kerberos
 * Kiyomi
 * Thistlecrown
 * Varmos

Revenants

 * Death
 * Hela
 * Mortis Espinado

Spirits

 * Crux
 * Mary Worth
 * Malice

Others

 * Evangeline
 * Lucifer
 * Lucy
 * Pandora's Box