The best way to describe the creature was as a torrent of power.
A huge clump of energy, like a Heroic Spirit but somewhat different.
Like a living tornado of Elements, repeating the cycle of compressing the Elements of its surroundings, accelerating them, and immediately bursting them back out.
Taking water as a metaphor, it could be described as a hydraulic jet cutter shaped to a specific form.
Its amount of water is nothing compared to a giant waterfall, but with enough speed, its spray becomes a fluid blade capable of splitting rocks.
Likewise, a torrent of magical energy whirled in the skies above Snowfield, circulating with enough intensity to crush souls.
The otherworldly creature did nothing but circulate magical energy at high speeds. Like a momentary glimmer turned permanent. The “specific form” it was shaped to was none other than the human form.
A grotesque humanoid figure, close yet distant in shape to what once was Flat Escardos.
The young Master of Jack the Ripper’s clothes were stained with his blood and had a large rifle bullet hole in the chest.
Nothingness and light could be seen from the gaps in the red fabric.
The bullet hole in the chest revealed an open scar composed of crack-like lines, reminiscent of punched glass.
An elongated slant ran through the hole, and jet-black darkness could be seen from inside it.
It was like a mass of dark, dim shadows sucking in all light.
Despite being in the center of a human body, the hole felt deep as an infinite corridor. Its apparent absorption of light made it the most prominent part of the entity.
And a giant light source can be seen from the gaps of the hole, assumedly the final destination of all the absorbed light.
It was a light source, but the darkness in the hole wasn’t illuminated by it.
The light source emphasized only its own existence - a Core resembling a giant eyeball, covering only its own body in radiant light.
A third party has no way of knowing if this “eye” too massive to be a real human eye is the Core controlling the darkness or a Core domesticated by the infinite hollow enveloping it.
And what was above this hole and eyeball?
A head. The most important part in the composition of a humanoid figure. Contrary to the grotesqueness of the center of its body, its head looked quite peaceful.
Like a young human’s head, at first glance.
But anyone who knew Flat Escardos could tell from a distance that that was not him.
Short protuberances appeared on the sides of its head, barely visible from the gaps of its hair, which is longer than Flat’s.
Bizarrely shaped horns or antennae, like a mix between the luminescent crystal wings of an insect and the leaves of a tree, wiggled upwards, in a struggle against gravity.
It might look like a boy dressed as some kind of mystical creature for Halloween, but the almost arcane harmony of its design let anyone tell at first glance that what they were seeing was real.
The face on it looked perfectly human, molded as a more refined version of Flat’s now blown-off face.
But contrary to Flat’s peaceful, innocent, and boyish eyes, the figure had the lonely eyes of someone who disdained, pitied, and detested all in the world. Around those eyes, there were marks that could be interpreted as either scars or tattoos.
Its face looked even younger than the already babyfaced Flat.
Its body was also quite deaged. The clothes that fit Flat perfectly rapidly became too big for the new body, and the holes in them started to expose skin.
But what was inside the clothes is still as hollow as before.
Like a broken ball-jointed doll, it was missing most of its hip and elbows.
The shot portions of Flat’s body could be seen crumbling in real-time.
The hollow shadows leaked out of the cracks in an attempt to prevent that and hold the human body in place.


Fate/Strange Fake: Volume 7, Chapter 21: "Beings Shaped in Man's Image"