So... yeah. Found this today. Wasn't my size Rescue Bots Heatwave Toddler Costume - Transformers News - TFW2005
I don't know about those but they did make a prime and bumblebee for rescuebots and even for prime. I saw them at target last week and it looks like they got them on their website already. Toddler Boy Optimus Prime Rescue Bot Costume : Target
It CAN'T be Heatwave...that bot is smiling. Too cute, too bad my nephew is too big for this!! He's been Optimus, Bee and Ironhide...they don't offer costumes in anybot else..at least in the stores. Awwww.