This commentary may be a little disorganized, as Iām reading your document in the other tab and remarking as I read things.
As to abilities, if the characterās main weapon is a rifle, why carry around a flail? Why not an explosive grenade, since he already has a smoke grenade? Speaking of, obscuring the battlefield with that smoke grenade could be useful, but it works both ways. Perhaps thereās a way to give him a passive or something to let him see through the smoke? Not strictly necessary, but just a thought.
The ultimate is fine, though you might mention in the ability that itās his armor that lets him do it and survive the effects.
As to the loreā¦well, keep in mind that nothing I say is intended to insult or injure. As I mentioned elsewhere, you have done quite well for a new author and I do think you have potential. That being said, the story needs some serious work if you intend to present it to Blizzard as a serious concept idea. If youāre just having fun, disregard everything below.
With the Overwatch roster being so diverse, and almost full already, having more characters from places we already have people representing isnāt really desirable, at least from a marketing and lore standpoint. Ideally, weād have people representing every place and nation in the world, but as it is, weād still like people from as many different places as possible. There is a definite lack of Middle Eastern characters, so thatās not a problem, but Pharah already represents Egypt (and weāre given to understand Ana is partly Arabic, I believe.) So if you want to have Amir originate from the Middle East, I would suggest having him be either entirely Arabic or of another nationality entirely. Thereās no shortage of countries there, thereās Yemen, Qatar, Oman, Syria, Turkey, Iraq, and Sudan, just to name a few.
This leads into my next point. Just as Overwatch is diverse, so its characters arenāt always connected to each other. Thereās the former Overwatch agents and the Talon crew, and the two Junkers, and so on, but many of the characters would have no reason to know one another that well. Besides which, each of them, regardless of any connections to each other, can stand alone as their own person. Before she joined Overwatch, Mercy was a prodigy physician running her own hospital, Jack Morrison and Gabriel Reyes both served in the United States Armed Forces, Mei was a renowned scientist working for presumably the Chinese government or a university, and so on.
Amirās backstory seems so closely tied to that of Pharah and Ana (and one of his siblings to Mercy) that I think it hinders his ability to be himself and stand out from them and the other characters of Overwatch. Now, itās just fine if he knows of Pharah. He might, considering how Ana was one of the founding members of Overwatch and presumably famous in Eygpt and Arabia. But the connections you describe tie him too closely to her family. One might question the necessity of having him at all, since she seems to be playing an equal role in most of what heās done in life.
Now, Iām not saying you canāt have him working for Helix. But if you are, you canāt have him fill the same role as Pharah is. I canāt tell you what his role should be, of course, but my initial thought would be to tie him to the Helix conspiracy somehow, the one that Sombraās after thatās presumably behind both Talon and many other world events. One might guess the security company that shares their name is tied to them somehow. Maybe he joined up looking for them, to try and shut them down, maybe he thinks they were responsible, along with Talon, for the ambush that killed his squad? Just ideas, and nothing you should feel like you need to consider in any way, but the story as it stands doesnāt give him room to breathe and grow.
Oh, and I just remembered, Lucio is our designated musician. So if you want to keep his musical ability, make it distinctive in some way. Lucioās thing is modern synthetic music, so maybe have Amirās thing be traditional Arabic music? I donāt know.
I hope that anything I said is helpful and that it doesnāt discourage you. Itās entirely possible that Iām mistaken about almost everything and there arenāt so many hard or fast rules in writing. But I want to see you succeed and based just on what Iāve seen in writing, this is the best advice I can offer.