http://www.punchtimeexplosion.com/characters.php
Slight info about the games unlockable character has been released, they're not saying who it is, but anyone who knows anything about cheesy mid nineties cartoons will recognize that silhouette in a second.
Spoiler Below It's Captain Planet.
With the games 3DS release next week and E3 right around the corner, hopefully we'll start hearing info about the upcoming console releases.
Maybe if this game sells well other networks will release similar games with their animated properties, a Nickelodeon or Hasbro Hub fighting game would be pretty sweet IMO.