Who thinks using Megatron Rex is a good idea for featuring our beloved Tyrannosaur in crossover stories? Predacon Megatron is a bit long. I do like Megatron II but I think he's arrogant enough to try and one up the Decepticon leader by essentially calling himself the king Megatron. The better Megatron. And like, the original would actually have to do research to know that's what it means. He'd be so mad.