Yep. If you are a Storm fan, you can play either as Storm or Mohawk Storm on this online game. So who is better to use? And what can they do? Here's some research i did that you may want to read. : )
Let's start with Storm...
More Storm info: http://superherosquadonline.wikispaces.com/Storm
Storm Video Gameplay (with Black Panther): http://www.youtube.com/watch?v=nAkxyXdkrhE&feature=player_embedded
Cost: 600 Gold
Now with Mohawk Storm...
How good is she? no link yet but will update
More Mohawk Storm info: http://superherosquadonline.wikispaces.com/Storm+%28Mohawk%29
Mohawk Storm Gameplay: http://www.youtube.com/watch?v=kwM7Xu5eYl8&feature=player_embedded
Cost: No cost. Unlockable through challenges
Mohawk Storm Cards:
Anyway, more info will be added on this thread about Storm and Mohawk Storm including images of them.
For the MSHSO Tier List evaluated by Quirky, you may check it here: http://forums.comicbookresources.com/showthread.php?t=400369