Fiend

== Fiend ==
A Fiend is a Devil that has taken over a person's corpse.
=== Overview ===
Fiends are Devils that have taken over human corpses as their last resort to survive. Devils lose a significant amount of their supernatural power and ability to perform contracts after becoming a Fiend. Fiends can be identified by their distinct head shapes, similar to how a Devil's appearance and set of powers may not always represent or fit the theme of their “name” (concept) the same can apply for Fiends.
Fiends will usually retain their original personalities they had as Devils. However, some Fiends retain more of the original corpse's brain than others, leading to their personalities becoming mingled such as Violence Fiend, who should be inclined towards violence, but instead prefers peace. It should be noted that this type of Fiend is extremely rare, being the exception not the rule, as well as how a "mingled" Fiend is still just the Devil who is conscious that managed to absorb the traits and/or memories of the human as the actual human remains dead.
Devils may also deliberately choose to retain half of the original corpse's brain to blend into society, causing a living Fiend host, as with Asa Mitaka's possession by the War Devil. With Fiends of the living host variety, both personalities exist separately in one body until the Devil decides to take over the remaining brain or relinquishes full control back to the human.
The Devil possessing the human in this case can choose when to control the body, but may not always be able to take over in instances where the human host is under high stress or in immense fear. When not in control, the other personality is still visible and audible to the one controlling the body in the form of a hallucination. It is unknown if, for this unique type of Fiend, if the Fiend's distinctive head feature will only become visible when the Devil's personality is in control of the body or if only the living host of the Fiend can see the distinctive head feature and no one else does.
Should a Fiend die, the Devil that possessed the body generally reincarnates once they reappear in Hell. However, since the body they possessed is destroyed, they lose all of their memories of their previous life. Once they become reborn as a new Devil, they will usually have the same exact personality as their current incarnation, but if they are the rare type of Fiend, then they will develop a new personality should they possess a new corpse.
=== Abilities ===
Fiends possess the supernatural abilities of their respective Devils but to a lesser degree. Some Fiends are able to transform into their original Devil forms temporarily. They can also restore their health by consuming blood. However, they are unable to make contracts with Devils.