Cyrexia

Tl;dr Cyrexia is a monsterous being that was once a woman, now twisted by the corruption within her. While she's from the Warhammer40k universe and scenes set within it are much appriaciated I can gladly play her in any setting, as she's quantum-leaping her way across the multiverse after a ritual gone badly wrong.




Cyrexia Thine, originally Cairine Ethyx, was the daughter of the nobleman and Inquisitor Jeremiah Ethyx, of the great hive Sibellus on Scintilla. However, it was discovered early that she was a psyker, and not a very strong one, one destined to be sacrificed for the Astronomican, not trained and harnessed.
Her father committed the greatest sin possible for a man of his position; he used it for his own gain, omitting his discovery and arranging for private tutors to teach young Cairine how to control her budding powers.

What her father did not expect was that Cairine grew in strength with training, soon surpassing those teaching her, and that rival Inquisitors were getting wise of odd recruitment of psyker acolytes with skillsets that wasn't very useful to a member of the Ordo Hereticus. Thankfully the first investigation was at best described as "bumbling", giving Cairine time to not only make an escape from Scintilla on a bulk freighter, but also erase most of the evidence that her father should have known about her gifts, condemning herself to lawlessness, excommunication and forfeiting her birthright in order to save her family from disgrace.


Time passes. For a lawless psyker time poses a danger of its own, as the doorway to the Immaterium within her mind is as a ticking timebomb. Far from fully trained, and fearing the fate that awaits a cocky, untrained psyker, she seeks out anyone and all is willing to teach: Hive gang Wyrds, warp seers among pirate crews, the Witches of Footfall.. and finally, more by mistake or not, ended up on the mage-technocrat world of Q'Sal, among the Glooming Worlds at the edge of the Screaming Vortex warp storm.

By now, not much remained of Cairne Ethyx, instead there was Cyrexia Thine, biomancer and telekine. Along the way she had forged her own morals and believes, casting aside her old.
The Imperial Creed is a lie.
The Imperium is a lie, a defunct state grown too large and stagnant to function, thousands forced to unnecessary toil and cruelness for uncaring masters and pointless labour. With those intentions, the well-meaning radical extremist joined the ranks of a Warband to do battle against the Imperium of the Corpse-God for the betterment of mankind and greater glory.

And as all well meaning extremists, she fell hard.

Appearance

Today Cyrexia Thine is a monsterum, not only in psychic strength, but in physical form. Having turned to the Chaos God Slaanesh, the Lord of Lusts, Prince of Pleasure, in her quest for sufficient power to vanquish her enemies, Cyrexia has been long exposed to warp magicks and the raw stuff of chaos. And as the soul corrupts, the flesh is twisted.
Corruption within, mutation without.
Granted apotheosis by her patron deity, the Daemon Princess Cyrexia stands four feet at the withers and seven feet total, standing up straight with the upper body is that of a beautiful young woman, possibly in her late 20s, with long platinum blond hair and a slender, almost petite build.
Her lower body, heavily mutated, is more draconic in form, heavily muscled and possessing four strong legs with clawed paws. It is covered in golden scales, but with an odd pink-purple luster that tends to flash over her as if caught in the light, even there is none. As a common gift from her god, she has been afforded the reward of hermaphroditism, but with the already present duality of her body, it has resulted in the muscular, powerful lower body receiving a heavy draconic manhood with all the trimmings, measuring a good 24" when erect.

Personality profile

Just like her patron deity, Cyrexia's personality is a study in duality. One one hand she is vain, selfish, often cruel in that she disregards the fate of those unimportant to her if it's a matter of her own gratification.
On the other hand, she can be kind, even motherly and loyal to those to whom she welds herself... and yet again, she can be quick to betray those whom she feels has insufficient loyalty to herself.


Combat

Cyrexia revels in martial conflict.
While she often goes without arms and armor, priding herself in her amazing speed and grace, her battery of psychic powers and heavy rending claws, she possesses a heavy Q'Sal crafted suit of carapace armor, it's plates akin to a mosaic of colored glass. Also, she possesses a force staff and displacement field.
While her upper body is not much more durable than a regular human's, her lower body is very robust and even armored. It also houses most of the important internal organs.

Mutations
Illusion of normalcy: If so desired she can hide her unnatural seeming, appearing as just a young woman. This has a side effect of making her very unremarkable, people are unlikely to remember having met her. This illusion is of course broken the second she does something physically impossible.
Tauroid: Given a quadrupedal form she's large and deceptivly fast on her feet.
Tail: Long, strong, prehensile
Psuedo-daemon: Given some aspects of her patron diety's daemonic servants, she can not truly die. At worst she's banished to the warp

Powers, skills and abilities

Acrobatic and stealthy, extremely agile both physically and socially. Deceptive and charming.
A scholar, well taught in the occult and daemonology as well more mundane knowledge like chemistry, commerce, medicine.

Psychic Techniques

Telekinetics: Power to manipulate physical items with her mind at a short distance. Extremely strong. Can also create shields and projectiles of force
Biomancy: Power to transform herself and others, manipulating the structure of tissue, knitting together wounds, cause fatigue in others
Telepathy: Able to cloud minds of those of a lesser will, to cause states of suggestibility, to read emotions and to a lesser degree minds. Able to project emotions onto others.