12 AM? Perfect time of day to draw and talk about Fox’s Prosthetic Post-Trespasser.
Unlike most other inquisitors, Fox’s prior connection to the fade made his Mark more volatile than expected and Solas’ steps to prevent it from killing him a very, very temporary measure, the Mark wounding him each time it was used throughout his entire adventure instead of simply around the time trespasser begins.
Because of this, his arm is practically destroyed up to his shoulder, bloody, scarred, and falling apart by the time he catches up with Solas, and it is removed up to that point as well. As a dual-wielding rogue first and a mage second however, the loss of his arm was something he couldn’t exactly accept, and with the aide of Dagna, Vivienne, and a number of contacts within the Deep Roads, work on his arm’s replacement soon began.
Made from the bones of the High Dragon Hakkon and carved into the shape of the required joints with additional carvings to further personalize it by Fox himself and his friends, the arm is a portable generator for magic capability, Held together by two polished orbs of lyrium as the “joints” within the elbow and wrist, the “ball” method has given him full rotation of his prosthetic, much like his natural arm.
Similarly, the arm bears a number of smaller lyrium embeds down the length of it, the open design allowing for swifter motions and more aggressive magical channeling with his mage abilities. The ‘claws’ of the hand were a last minute addition, made similarly from lyrium they are equal parts an intimidation tactic, and a conduit for staffless casting, should the need arise.
However, to power, maintain, and control an arm like Fox’s, a mage was almost required. Animated both through his skills with necromancy and (Troublingly, and a point of contention between himself and his significant others bull and dorian) The larger portion of a lyrium stone embedded into his body where the arm meets flesh, it cannot be removed easily, and the straps on the shoulder seem to be an afterthought.
With his history in Orlais, however, it has been reasoned that he engineered the device specifically to unsettle nobles, something so very clearly “magical” and similarly tied to Necromancers, and his own past as a Menagerie Mercenary is a statement he made very quickly after making it well known the Inquisition would not be disbanding to appease them.