Prologue

Peter was the son of the mighty titan Thanos. This he knew. He was powerful and strong yet lithe and agile. Ever since he was little, he had been trained to kill, subdue, and maim. He wasn't always the best at this, proven by the six golden, mechanical spider-like legs that protruded from his back. It could be worse, he would always tell himself. He could be as bad off as Nebula. Thanos did not accept any form of failure. For his children, this was no acception. Gamora was the best fighter out of the three. Peter falling into second place with Nebula staggering behind in third. Gamora had no mechanical parts attached to her body, she was the perfect child. Peter owned his extra legs (which at times, he'd admit, were quite useful) while Nebula seemed more machine than organic. Peter originally tried to help his father scientifically, figuring out formulas and ways to enhance the army that Thanos had at his permanent control. The only reason this stopped was due to the fact that Thanos felt as though all his children should be able to fight for him when needed, even if they were only twelve years old. Then again, time most likely had no meaning to the practically immortal titan.

Peter had no qualms against Gamora, although sometimes it was obvious he was jealous of her. He wanted approval from their father. So, he began to train more often. Quickly, he managed to dominate Nebula in hand to hand combat. Then, he dominated her in weapons (he had built most of them to know how they worked anyways). When the time came to demonstrate to his father and eldest sister that he could fight, he was quick to win. Nebula was down almost as soon as the fight had begun. Peter thought that at that moment, he saw a spark of approval from father. That spark quickly vanished when he had told Peter to fight his eldest sister. Peter knew he was good at fighting, but he knew that he wasn't good enough to beat Gamora. She had far more and advanced training as he had. The fight was over almost as quick as Peter had bested Nebula. That earned him his golden mechanical legs. At the time, he was fourteen years old. Peter had expected his father to remove some form of limb, like he had done to Nebula, but he didn't. He ordered the one who had done procedures on Nebula to embed the legs into Peter's back. The procedure was painful, beyond agonizing. He had been given nothing to dull the pain, nothing to make the operation any less agonizing. After that, he rarely lost a fight.

Fast forward a couple of years, Peter was now sixteen. Peter was now practically alone in his home with his father. Nebula and Gamora had been "lent out" to Ronan, a power-hungry servant of the massive titan. Peter didn't trust him one bit. He was too eager. When Ronan reported that Gamora had run off with one of the legendary infinity stones, Peter was not surprised at all. While Gamora was loyal and had the respect and approval of their father, she had never been truly devoted. Apparently, she was merely waiting for the right time. Nebula was quick to offer to go after her, obviously in an attempt to earn more approval from Father. At least, that's what Peter assumed. Peter didn't hear much from Nebula, Gamora, or Ronan after that. He had gotten the report, though, that had stated that Ronan had tried to take the stone for himself and had been killed by a new group that called themselves "The Guardians of the Galaxy". He wasn't very shocked to discover his eldest sister had been reported to be a part of this group. He had asked Father if he should pursue Gamora and try to discover what had become of Nebula. He had been told to stay at home, to train. So, he did. He trained like he had never trained before. He knew Father was planning something. The new golden accessory that adjourned his left hand only proved this theory.

Well, that was the prologue. A quick sort of skim through of his time as a child to Guardians of the Galaxy vol. 2. I say Vol. 2 because Thanos had nothing to do with that movie and so I just said Peter trained the whole time. Basically, Peter is aware of Earth and some of their customs/traditions/etc., but wasn't raised there. He doesn't know Tony Stark, Captain America, or any Avenger. Just wanted to put that out there.