Disclaimer: I do NOT own any of the characters in this. I'm merely using them to entertain and possibly parody. Capcom owns everything here.
When we were first created, we were a whole. I was the kind, caring side and my brother was the soldier whose sole duty was to protect his sister.
That all changed when he joined Repliforce and took me along with him.
He now had a real purpose, to destroy any and all Maverick threats, but his attitude affected his social life and he seemed more withdrawn, quieter. It was left to me to be happy, but I couldn't stay around Repliforce. There was too much killing, too much sadness. So I left.
That's when I met Zero.
He was part of the group of Maverick Hunters, under the command of Signas. He had the same problem as my brother. His attitude and his history led to him not having many friends, save for Megaman X. He actually seemed to come out of his shell after he met me. Turns out he was completely insane when he was awakened, and the Hunters, now his comrades, christened him as "The Crimson Devil" and generally stayed away from him, fearing that his anger may flare up again. I never saw him as anything other than a kind, caring individual who'd had problems in the past and gotten over them. Is it possible for a Reploid to love? I guess it was, although he didn't seem to feel as strongly as I did.
Then something went wrong.
Repliforce had been involved in several disputes with the Hunters, and it all came to a head one day. Zero never told me about his assignment, saying that it was a personal mission and that I shouldn't ask further questions. I followed him in secret, and what I saw then would bring all my hopes and dreams crashing down.
Zero had been ordered to terminate my brother.
They were both too proud and headstrong to reconcile, so they fought. And Zero won, granting my brother an honourable death on the battlefield, just like he wanted. But, seeing my brother lying motionless on the floor caused something inside me to snap. All I saw now was an enemy that needed to be destroyed. I was no longer a whole. I was no longer myself.
I never intended to take things as far as I did, but the pain of my loss and the sea of red before my eyes shattered my judgement. I went berserk and attacked probably the only real friend I ever had. I could see in his eyes that he was sorry and that he didn't want to fight me. I didn't care. He eventually realised that he would be destroyed if he didn't defend himself. So he ended it. My battered, bloodstained body joined my brother's. And Zero retreated back into his shell, turning back into the quiet, sombre individual that he was before. He has remained there ever since, although occasionally he does break down and weep. I've seen him do it.
Do Reploids go to heaven? I don't know. All I know is that I'm standing side-by-side with my brother, looking down on the world, down on Zero.
He once said we'd be together forever.
Turns out that forever is a long time coming.