Snowstorm: I don’t have a civilian name for her yet (any suggestions), but I do have a backstory for her. She was also a college student (Captain Blaze’s best friend, in fact). She got her powers when, during a winter break, she visited her grandparents and, while outside, was fairly close to the crash site of an alien spaceship and was knocked out. When she regained consciousness, she had ice and snow related powers.
The boots of her costume have retractable ice-skate blades (not pictured). While she already had a mask, I realized that it was a pretty crappy one that wasn’t really hiding much, and thus went with face-wear designed to somewhat evoke ski/snowboard gear.