Freezeblast

Freezeblast was an accidental or intentional (unknown) suit shown on the September release ad although it itself was not added. It is most probably just Heatblast, but for some reason, it is in an aquamarine hue instead of orange and yellow while the other Exosuits in the ad don't.

Trivia

 * It resembles Heatblast with a cold from one of the old Ben 10 episodes called "Side Effects".
 * Info can be read on this blog, where the idea was created.