I don't know if that's X; I actually assumed it was supposed to be Green Biker Dude, the guy who dies in the attract cinematic of Megaman X2 who became a /v/ meme.
Dynamo is a bounty hunter. Vile is clinically insane. Axl I don't really know(?), I guess he's just chaotic neutral. Black Zero, though he should have silver hair actually, is from X2. And finally X, is not X - It's iX, also known as 'Return X'. You can see that on his color scheme.