First of all, i would love to see this costume in-game if you can create it white/gold RG type - red/black FK type.
Now about mystery box.
Commando Gear and Cap
Pet Skin: Panda (FK/RG)
Call of the Wild (All Female Classes)
Howl of the Wild Leotard (All female classes)
Tarnished Love Teddy (All Female Classes)