Is that, of course, they will act according to their personalities, not their powers. The party animal who can hide in shadows and pass through walls will be out in the public eye all the time. The mysterious figure with super strength is the one who will sulk about.
Especially when I've picked one who will sulk about to "rescue" our heroine, not having realized that she had keep secrets from the authorities only because she hadn't figured stuff out, not in fear of what would happen. The personality certainly matches up. But the powers don't. Well, seeing in the dark does.
But she has no other useful skulking abilites.