So we all know that Megatron and Barricade are confirmed to be in TF5. We could also be seeing Onslaught in TF5 as well. But here is the interesting part that REALLY got my attention. I started doing more research and here it is: A THREE HEADED MECHANICAL DRAGON! This could mean many things. It could be Predaking, it could be that Megatron has a beast mode, or it could be another bot. I'll keep doing more research on TF5.