Aeonian

Aeonians are a rare race of evil spirits that have an incredibly strong connection to Dark Magic as well as a natural understanding of the Dark Arts. The origin of them remains foggy but they are most commonly believed to have derived from the Dark Realms but can also be found in some parts of Rathnir. The Aeonians are known to be hostile, manipulative and violent; they also carry a heavy dark aura with them that can be harmful to those around them. They are considered the strongest spiritual entity and have been infamous for killing both mortal beings and other spiritual beings of similar nature.

Origin and History
The Aeonians are believed to have originated from the Dark Realms which are a group of evil dimensions that are home to many different dark spirits and entities such as Demons, Shinigami, Ghouls, and others. The Realms are also the origin of all negative energy that flows throughout the universe. They started off in the Dark Realm Gehenna and grew in strength whilst conquering the entire Realm for themselves and over time it became their domain. Their lust for power drove them to discover other Realms but are unable to leave their current Realm without a physical form. It is believed that in order to gain a physical form they must be summoned by mortals that used a ritual or formed a pact with the Aeonian. They can be summoned into objects that corrupt the user or owner and manipulates them into forming a pact and providing them with a physical form. In order for the pact to be enacted, the mortal must be put through a trial which is commonly held in one of the Realms but can differ between the individual desires of the host. Once the trial is fulfilled the Aeonian spirit becomes one with the host and the Aeonian has free reign in both the physical and nonphysical Realms.

Ancient legends of them have been told for generations but the information has gotten more and more foggy over time. Discoveries of old drawings and stone carvings reveal similar tales that rituals and pacts with these beings have happened throughout history on different occasions. With this being said, little to no new information about these sprits have been gathered and it's seemingly been purposefully covered up.

Appearance and Physical Traits
Aeonian spirits in their nonphysical form are similar to shadows but once a pact is complete, their physical forms are similar to human stature with distinct features such as crimson red eyes, pale white skin that lack blemishes, and seemingly perfect bodies. They have a mark on their skin to signify that they are of the Aeonian race. They don't eat physical food in order to properly nourish their bodies, they also have strength far greater than the average mortal being and a great talent for Dark Magic.

Pure-Blood
Pure Blood Aeonians are the original spirits that have a high intelligence as well as perfect understanding of Dark Arts and are immortal with no known fatal weaknesses and cannot be killed with conventional means or weapons. They have the ability to turn mortal beings into Half-Blood Aeonians at will but are very selective about who they transform. Pure Blood Aeonians are also the most narcissistic and manipulative, they are known to create Noble Families to differentiate themselves from one another. Some families are more prominent and powerful than others and at times may even be worshipped by other beings and spirits.

Half-Blood
Half Blood Aeonians are either created by a pure blood or born when a pure blood has a child with a non Aeonian being. They are able to be killed but not with ordinary weaponry or conventional means, they naturally live around 500 years in Rathnir but are able to live practically forever in a Dark Realm. They also have a strong connection with Dark Magic but are more vulnerable to manipulation and are unable to wield Cursed Weapons. Half Blood Aeonians have the capability to become Pure Blood Aeonians by sacrificing their physical bodies and Transend to the Dark Realm Gehenna.