Chená is a bipedal humanoid, she can be more or less deduced to be female despite her rather alien appereance. She stands quite tall, at 223cm/7'4" should she stretch her back and extend her digitigrade legs. However most of the time she appears considerably shorter due to the structure of her legs as well as the curve of her back, a light 'S'-shape.

The shape of her spine lends her an unusual posture, with her shoulders being slightly behind her pelvis, providing a stable center of gravity. She is of a light build and appears to be a quite agile runner, capable of making great jumps and leaps judging by her structure alone. What most notice first about her is the scorpion-like tail sprouting from the small of her back.

At its root, the tail is nearly as thick as her thigh and the tail is long enough for her to pull it over her head and still sting herself in the back. The tail grows thinner towards the tip, with each following chitinous segment being slightly smaller than the former. The chitin on the second to last segment of her tail contains a small hole, large enough to barely stick one's little finger into. This hole doesn't appear to be damage, however, but formed naturally. The very last segment is considerably larger and rounder than the one before it and carries a nasty-looking barb.  

Her skin is deep purple in colour, with eyes of a slightly lighter purple to match. Her face is framed by a series of stubby, chitinous horns. Down from the knee, her legs are inverted and covered with chitin much like her tail. Her hair is naturally pale white, matching the chitinous shell of her tail. Across her back, especially on her shoulder blades, one can feel small, hard bumps under the skin wherever the bone is close to the skin, like there was a layer of her chitinous shell under the skin.

Generally, when one gets past her less humanly features, she appears petite, perhaps even attractive if one doesn't mind the few oddities. From a human perspective, she appears fit and healthy. She might've however missed out on a little bit of excercise, which can be seen in her rounded hips. She possesses a moderately sized bust, on Sinfar standards anyway, and it's not rare of her to flaunt her more comely features, at times showing quite a bit of skin in her choise of attire.

Whenever she smiles broadly enough to show her teeth, or should they be revealed otherwise, it would be obvious that she is geared towards a more carnivorous diet than the average humanoid. Her teeth appear considerably sharper and more pointed than those of a human. Additionally, should one ever get a closer look into her mouth, instead of any molar teeth at all, a pair of tiny, chitin-shelled chelicerae sit at the back of her mouth, usually remaining neatly folded when she is not eating. She usually eats in a realtively slow, nibbling fashion more akin to arachnid than humans.

The second to topmost of the horns on the right side of her head seems to have broken off at some point and only a small stub remains. The chitin looks scarred and displays hints of regrowth, but the horn remains considerably shorter compared to its counterpart on the left side of her head.

As of recently, she has dyed her hair to a vibrant blue with a hint of purple.