The Making of the Phantom

(Y/N) is a weapon. He was born genetically mutated to be the perfect soldier but escaped from his life to hunt down every mafia boss he could get his hands on. But what will happen when he joins the Avengers? Will he become a symbol of justice or revert back into the murderer he once was?

DISCLAIMER
I do not own any of the characters in this book except for the self insert. all rights go to Marvel and Disney.