> I assume she's made up for Destinies cause she's not X-Man I've ever heard of.

indeed, in destiny you can chose one of 3 char's that are unique for that game and act as main protag.

same for the powers, shadow matter is my fav, but you also have density control and energy projectile

officially the makers made the char's and the powers connected, having a said power fitted to a char

but they gave, in the mind set of controlling your own destiny, the players the choice to connect each char with each power as they wish.

in the game you can also find X-gene's (offencive, defencive and utility) and suite (simply outfits) all fitted to a X-men or brotherhood char, I might need to put up a list of the known ones and use them as drops, or a link to the gamefaq page about them'
also, now I think about it, if you had a set of one char's genes and suite you get a bonus.