Brought to this world by a botched ritual that didn't quite contain it, Kexxistrvcz is an unbound demon who takes the form of the woman who summoned it to the Earthly plane. 'She' has little fear or concern for individual humans, but is utterly enamored with the material plane and human culture. With the ability to take on any human form she desires as well as a true form with more teeth, inhuman strength and resilience and the ability to spit literal Hellfire, she is a force to be reckoned with but her demonic nature - and temper - get her in trouble often.
Kex's looks are extremely flexible. When hiding, she takes the form of one of the students who summoned her: she becomes a caucasian woman, 25 years old, with shoulderlong hazelnutbrown hair, brown eyes, and few distinct features. She becomes slightly taller than standing in demonic form, but still only clocks in at 5 foot 4 inches.
Kex has a demonic 'true' form, which is a short-ish orange-skinned creature with four arms and no legs, slithering around balanced on its tail. Its wide tail stretches out seamlessly below its torso, maintaining its width until it curves back upwards behind its body, where it ends in a blunt point. From head to tip of tail, the whole body is almost seven and a half feet long, but a good deal is lost in posture, leaving it quite short by human standards. Its torso has a recognizable rib structure and a quite visible muscle structure, looking not dissimilar to how a starved-out human's would look save for the shoulders. Each shoulder sports two arms, which can move fully independently and have the same recognizably human, but thinned out, look to them. Its hand are thinner and longer than human hands and only have three long fingers, including a somewhat opposable shorter 'thumb'. Each finger ends in a sharp lengthy nail.
Its head is horned, and snakelike, forming with a very short, almost invisible neck from the torso. On top it has two short, very sharp horns that curve forward from its head. It has no hair, no nose, and no eyeballs, seeing with a photosensitive layer of cells across the upper part of its face. It does have a mouth, stretching horizontally over almost the entire head with no lips, which can open remarkably wide to reveal an array of thin, daggerish teeth. Inside it is a long, extremely flexible tongue that drags food from between the teeth into the throat. If you would look down its throat, you'd see it gets lighter, not darker, as anything that is swallowed is destroyed to feed the demonic fire fuelling its body's energy expenditures.
Kex can change between forms at will with little to no effort. She can also stop transforming at any stage between the two.
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Personality
Like most of her kin, Kex has little concept of morality, compassion, loyalty, or honor. Kex's more personal interactions were, and are, viewed as more transactional in nature, horizontally or vertically. In an existence where demons literally consume lower demons, the most basic principle is understanding what, and who, gives the best chance for survival. As for herself, Kex is fickle and has a somewhat short attention span. She has no concept of delayed gratification and will always go for the quick gain now. She's selfish, frequently greedy, quickly jealous, has no grasp of responsibility (granted, never needed one) and has no shortage of self-image. She gets herself in trouble on the regular.
Kex loves the human world. She views it with almost childish wonder, savoring each new day, each new experience, each new view, taste, sense. She's almost permanently in a good mood, with a spring in her step. She's curious about everything, and constantly hungers for new sensations.
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Noteworthy
While Kex looks human, she doesn't have the mannerism down. While she has become used to using legs, her sense of balance is poor. She usually does not breathe, which observant folk can notice. When speaking, she's unpractised, varying wildly in volume with poor articulation and she runs out of air very often (particularly at the start of conversations, where she'll almost always gasp for air after she tries to talk while forgetting her lungs are empty). She also still has no heartbeat, no sense of smell, and her body is still 50 degrees Celsius (122 degrees Fahrenheit), as the fire within still burns. When sitting, Kex puts both her legs together and rests her body on their combined form, which looks a tad weird when she sits on chairs (though not super uncomfortable).
A last notable thing is that while Kex doesn't have a sense of smell, anyone within a few feet that does will notice the smell she gives off. Even though her body has no secretion (so no sweating), Kex naturally and noticeably smells of sulphur, which combined with very dirty clothing makes her smell like a homeless person who spent the night in a matchstick factory.
In terms of clothing, Kex wears a largely stolen set of clothes she changes mostly when she sees the chance to nick something new. Currently, she wears a very wide short-sleeved blue t-shirt with a large print of a smiley emoji, a mostly fitting pair of jeans with ripped out pockets, and an almost brand new pair of white sneakers with weird claw marks on the sides.
Kex was written for a forum where there was a central setting and each person created character(s) to pair off for short 1-on-1 roleplays. Since several characters had a demonic background, I wanted to write a full-on demon. Now, I personally dislike the 'good demon' trope, they're sins personified, but I still wanted a character that was likable. Kex was the result: a completely amoral creature where morality was concerned, but with a permanent positive bend in all her goals and outlook on life. Over time she became one of my favourite muses ever due to her upbeat style and unique mix of strengths and weaknesses.
⥼ I actually went out of my way to draft a reference list for demonic names/princes to reference when writing Kex. If she drops a name, there's a 100% chance it's from elsewhere.
⥼ Kex's pronouns change fairly frequently. She'll be called by male pronouns while male, and 'it' while in her demon form. Kex doesn't have a 'true' gender identity, only a habit of taking her summoner's form.
⥼ The demonic Talent of Tongues gives Kex the ability to speak every language, including dead ones. She also speaks Demonic, but it's both incomprehensible and rather painful to human ears.