Wednesday is on the move Thundercats Wave four!

Where the hell is my wave 1... Thundercats wave 4!!
BTW, my wave 1 is at the nearest post office. Possibly delivered tomorrow or Wednesday. But here's the thing:
Wave 4 has been teased with a pic of the Snowman of Hook Mountain.

 This would be the first time a heroic character that is not a Thundercat is added to the Thundercats Ultimates line.
My guess is that the other heroic character might be the Thunderkittens Bengali or Lynx-O.

The evil characters are a bigger mystery. Will we start with Lunattaks or Berserkers? Will we get more one-off villains? Will we get closer to complete the Mutants? We'll find out Wednesday.