EDIT: Rags are currently not an 'open species', since I need to work some more on them. Thanks for respecting that!
Mostly these are known as Rags, though 'Ragnarok' is their full name.
Oh my god, so much text on there. I think I about covered everything (it helps to use NORMAL FONT oh man. But I think it looks nice!)
But here is some additional stuff that couldn't fit (mostly copied and pasted from elsewhere)
They get all senses when they possess someone, but here isEnhancements based on tribe:('sight' tribe) - Enhanced vision - and can 'zoom' focus - in other words, they don't need binoculars.
('scent' tribe) - Enhanced sense of smell - much, much greater than, say, bloodhounds, and are usually excellent trackers because of it.
('taste' tribe) - Enhanced taste - they can identify individual ingredients in food, even when only small portions are used (it makes it difficult to try to destroy their host by poison) - and tend to be extra well spoken and persuasive speakers.
('sound' tribe) - Enhanced hearing - and can easily single out voices from across a packed room, across the street, or even in a concert stadium.
('touch' tribe) - Enhanced feeling - they can easily tell where objects have been (part of their history, in other words) by touching them carefully - and tend to be rather dexterous.
('ESP/sixth sense' tribe) - Particularly rare. They actually induce psychic ability in their host, though when they leave, it goes as well. It should be noted that they are a bit problematic because it is hard to tell a true psychic apart from one of these Rags in a host.
Null Tribe - Also rare. They don't have enhanced sense of anything, and tend to be more vicious than the rest of the tribes. (*still working on this - possibly they make up for no enhanced senses by being able to use magic/energy skills well)A note on Rags that are mixed tribes:They would have two enhanced senses, but they wouldn't be as strong as a rag's who wasn't mixed like that. Also the markings wouldn't go past being on two pinions. Sooo..here's some examples
Sight x ESP = Sight-ESP or ESP-Sight (primary-secondary)
And for Example, a Sound-Touch x ESP-Taste = either Sound-Taste or ESP-Touch
Aaand Sight-ESP x Sight = children that are just Sight.
Demons can also breed with any other type of demon, though I'm not sure how it affects their ability to possess people yet.Some more pictures/examplesThese might be helpful too.
[link] Shows some examples of decorations (though the wings markings are =very= inaccurate!!)
[link] This sketch kind of shows how the tribe-mix would look in the wings. Also a note on young (Rags breed unconventionally, apparently)
Aaaand that's all I can think of right now! I HOPE THAT WAS INFORMATIVE. 8D