Quotes / Transformation of the Possessed

Bernice Summerfield: Goddess, what's happened to Annie?
Mary Hughes: Her eyes! Look at her eyes!
The Bridgehead: I am changing this body, human.

— Big Finish Doctor Who: Shadow Of The Scourge

The shadows spread all over Jaune, completely covering his clothing and his face, only leaving a vaguely human shaped mass of darkness before them. The darkness soon began to refine, shifting and twisting as the details filled in. From Jaune's body came long, flowing black robes, his limbs wrapped similarly in all black. A matching hood covered Jaune's head, in fact the only part of Jaune that wasn't jet black was the white and red mask on his face. Jaune's new form fell to one knee, as if he wasn't used to standing.
[...]
Seemingly satisfied, Jaune then looked up at his friends, nearly causing them to jump back in terror. Pyrrha stared into the pitch black void of Jaune's eyes, and she understood. This wasn't Jaune in front of her. This was Nihilus.

— Jaune Arc, Lord of Hunger, "Destiny"

It is the nature of magic to unpick reality, and so the daemon, a conscious personification of magic, cannot prevent its warping effect on its newly acquired mortal shell. Gradually the body will mutate, twisting into a grim distortion of its former shape. This is a never ending process and it is only a matter of time until the daemon's presence becomes apparent by the mutation of its host's body.

— Liber Chaotica

Robert changed.
His face suddenly ran together like melting wax, the eyes flattening and spreading like knife-struck egg yolks, nose widening and yawning, mouth disappearing. The head elongated, and the hair was suddenly not hair but straggling, twitching growths.
Robert began to chuckle.
The slow, cavernous sound came from what had been his nose, but the nose was eating into the lower half of his face, nostrils meeting and merging into a central blackness like a huge, shouting mouth. Robert got up, still chuckling, and behind it all she could see the last shattered remains of the other Robert, the real little boy this alien thing had usurped, howling in manic terror, screaming to be let out.

— Suffer The Little Children

Banes are Umbral horrors, and are not used to the concepts of biology and physiology that govern the human body. They almost find the human form weak and — perhaps — even a little grotesque. So they change it. Again, the host doesn't get any comfort in this process. He feels, perhaps painfully, perhaps not, what the Bane is doing to him. If the Bane needs him to develop glands through which to secrete poison or webbing, those glands appear - and the host must wait in terror as new organs form in his body. If the Bane feels that "its" human needs another set of eyes, the host must cope with itching, then pain, the suddenly seeing from another perspective.

— Werewolf: The Apocalypse — Possessed: A Player's Guide

"No wonder I'm so orange! And calloused-! I've become a horrid beast! Like [Wrathia]!"

— Ava Ire upon discovering she now looks like her demon, Ava's Demon

Mist eked off the body. It had been a soldier once ... Now it looked like a monstrous deformed spider trying to twist itself into being out of the flesh and armor of what had once been human. The torso split as a rib thrust out, extruding and growing to become another limb. The creature screamed; it was the scream Fellian had heard before. Was the man not dead but trapped inside the monster as it perverted his flesh and bone into a new body for itself?

— Servant Mage

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