Test Subject 23061. (Sonic Boom)

A story where after Shadow lived only a few weeks into his life with Maria, he witnessed her brutal death to a G.U.N soldier. G.U.N had finally tracked the space pod that led them to Shadow, who was bleeding and unconscious. When Shadow was captured, he lived his life inside a lab with a bunch of scientists. He was tested and experimented on, whatever those scientists wanted to do with him, they could.
He was deemed as a subject, an experiment, a weapon. A weapon that was only good for war and for the military to use. He stayed there for as long as he could remember until a mystery happened...

Storyline, cover, and title might change. Takes place in Sonic Boom, a lab in the deepest parts of the forest.