Yeah, they’re a loose category. Thanks for the subcategory suggestion! Honestly, my whole thing with them was to make it difficult to strictly define a demon so that they tend to blend with spirits, and there’s a little bit of overlap there.
Drooling’s actually not an issue, and here’s why- a demon’s body isn’t technically a “body” by most standards. They’re just a shell, really (they can get damaged and wounded, but it won’t affect them like it would a person). It gets complicated because technically demons don’t have organs. Cut one up, it’s just a mass of ‘meat’, in a way. But this means that demons don’t really drool, blink, or have nerves.
They can have fluffy tails. The most common animal tails tend to be foxes and cats. Multiple tails are rarer, but not unheard of.
Horns! The largest “hornspan” ever recorded stands at roughly 2.5 feet long. They don’t grow, given that a demon doesn’t have a growth cycle like how we think of one. Once they’re created, their appearance doesn’t really change. Even numbers of horns often mirror each other, yes. Asymmetry isn’t incredibly common in demons’ horns. Strength-wise, they’re not easy to break. It’s hard to assign numbers, because they can vary in width, shape, and size, but it’s easier to break a femur than an average demon’s horns. Chips are not common, but they can be patched with work. The horns don’t like to adhere to the patching agent, though, so it takes a fair bit of work. For extreme breaks, say a horn is snapped in half, it’s easier to just snap the other one instead of trying to stick it back on. Painful and damaging to the psyche, but easier.
Getting clothes custom tailored can be expensive, but it’s not rare. Many brands have lines specifically for multi-limbed creatures, though. Horn decoration is a thing, yes. Many demons will decorate their horns with bangles and long necklaces, although some will find or make small flower crowns for their horns.
Any patterns are generally limited to the arms, torso, or face. Uncommon, but they exist. Scales, feathers, and fur generally don’t exist on demons. The closest you’ll get to that is just exceptionally tough and ‘scaly’ skin.
Laying down is a feat on its own if you have horns. Many demons that have large horns simply don’t lie flat on their backs or stomachs. The best option for these demons is just to sit back on a low incline, so that their horns aren’t completely impeding them.
The most common type of demon is the elemental. These control one of the 6 elements: earth, air, fire, water, wood, or metal.
No. Demons don’t have stomachs. Even if they wanted to, demons can’t eat. Wealth is generally flashed through things like horn jewelry and clothing.
Yeah, the whole “demon life” thing is a something I should’ve elaborated on. Demons don’t have a gene pool, because they’re created, not born. But yes, certain abilities tend to have traits that reflect them. Earth and wood demons often have more flesh tones in their skin, along with greens. Water and air demons will be on the cooler end on the color wheel, so blues, purples, along with soft whites. Fire and metal demons have warmer skin: warm flesh tones, red, oranges, yellows, and greys to blacks.
Demons are sort of “born” with an innate sense of their powers. There’s a small amount of control that they have from the get-go, but it can be cultivated with the help of other demons to explain, as it’s nearly impossible for schools to teach this. As for limits on powers, there aren’t many. No demon has the ability to alter time or reality (only the perception of it), gravity, or the abilities of other demons.
Vessels are used for a number of things! When demons and humans first lived together, vessels were mainly used to get close to humans. A demon may want to take a vessel for a variety of reasons, such as experiencing food, or even just because they don’t like their original form. Yes, it’s a crime, but the taking of a vessel is a hard crime to charge.
As I answered these, I realized I had actually gone through some of these questions in my head, ha. Sorry for the long & late response!