J-17 was made by Dr.Snow on accident. He was made to fight archdemons. As it is Dr. Snow's job to make anti-demon defenses and weaponry. He was originally going to be powered with the holy energy Dr.Snow had managed to harness from holy weapons and artifacts. But instead, they accidentally powered him with EVERY ARTIFACT. Holy, Unholy, Mechanical, Elemental, Raw, Arcane, Void, Shadow. He was given literally all the energy in the entire facility including a ton of energy sucked through the void and hell portals in the facility. He's now a very neutral but powerful "Fake human" that wanders around aimlessly. He escaped the facility easily.
As a result of the experiment, he got an amplified version of Shadow Mirror. Meaning he can mimick any move an enemy uses in his presence. But unlike Shadow, he can analyze the ability and replicate it perfectly after only using it once. He also got energy absorption which is an ability that allows him to absorb any Electrical, Fire, Holy, or Raw magical attacks and use them to boost his own energy of that kind.
