Devils (Diavolos class) are considered the most dangerous and violent species that the FLIPSIDE has to offer, representing one of it’s biggest threats to date. All Devils should be considered hostile and should never be voluntarily engaged.
As a group, Devils share little to no similarity with each other. No two Devil species are alike, with the differences being so extreme no sane taxonomist would even attempt to classify them on the same branch of life, or even on a branch of life at all. Despite this, Devil biology does obey some common rules:
- All¹ Devils are blind, despite some species seemingly possessing eyes.
- Devils leave no corpse behind, with any and all remains disintegrating into a red dust upon death or injury with the process being so efficient they don’t leave behind any smell.
- Devils do not age after reaching species maturity.
- Devils require little sustenance when compared to their activity level, although they can get hungry.
- Devil speech has the property of being automatically translated, meaning the hearer will perceive Devil speech in their mother tongue, with no exception. This also works in reverse, with Devils being capable of understanding all languages, although they are unable to distinguish between them.
- Devils can sense and metabolise the fear of other life forms, with beings experiencing fear in the immediate vicinity of a Devil invariably increasing the reflexes, senses, speed and strength of said Devil. This extends to all species that are considered alive and that are capable of experiencing fear, including other Devils.
- Devils can consume fresh blood to regenerate almost instantaneously, being capable of completely recovering from multiple fatal wounds in a matter of seconds.
- A Devil’s base strength is directly proportionate with the local Anima density, getting weaker or stronger based on surrounding Anima density.
All of these traits are because, unlike regular lifeforms, Devils are entirely made out of Anima. One of the best indicators of Devil activity is the local Anima level, with each individual Devil creating a noticeable sink effect compared to other beings, often leaving behind Tar. They can theoretically manifest anywhere with a high enough Anima density, meaning Devils can indirectly spawn more Devils based on how active they are. This is why Pandiavolum, the place with the highest Anima concentration ever, is home to the biggest/strongest Devil population ever.
¹ This rule is bypassed by some species by reworking parts of their biology into somewhat functional eyes, although true eyes are still absent.