In SF2 they established that Cammy was an amnesiac, presumably a former Shadaloo agent, that simply got picked up by British special forces. In SF Alpha they established the whole Bison Dolls thing to resolve the question of her past explicitly.I was watching Capcom's Final Round stream where Decapre was shown and my first thought was "Cammy?". She was speaking in Russian though(or at least had an accent) so it being an "evil" version of her didn't really make sense. I figured it was some kind of clone or sibling or something then.
I went to look up more about her and (I have no idea if this is an actual spoiler or not regarding Cammy)apparently Cammy is a clone of M. Bison/Dictator or something?
Haha, my first thought was "when did that happen?!" The last I knew she was some British special forces agent person. If this is old and I had known it at some point then I clearly forgot but the only Street Fighter I actually played was a few versions of SFII and that was I don't know how many years ago.
Thinking about it and I don't think I really know any SF lore other then it being a world tournament to see which fighter and style is the best. More busy just playing the game I guess,haha.
Also, while Decapre may look like Cammy with a mask, she doesn't play much like her, which is what really matters.