The Last Knight: Rationale for Megatron's return?
 

I know Megs keeps coming back. But what is the rationale (regardless of how stretched) for his return in TLK? In TF3 his head was split open by Optimus. In TF4 humans try to put his "memory" in Galvatron (I think?). So is this Meg in TLK a version of Galvatron in previous episode?

Re: The Last Knight: Rationale for Megatron's return?
 

Galvatron = Megatron in a new body. He's just taking a new form and his name back in TF5.

Re: The Last Knight: Rationale for Megatron's return?
 

Galvatron and new Megatron share some design similarities along with TF1-3 similarities, so my 2 guesses would be:
1: Megatron reformats his body into a new form and calls himself Megatron much like how he said "I AM MEGATRON" in TF1, because he's always being called NBE1 and Galvatron is NOT who he is.
2: Quintessa has something to do with his rebirth. I notice some shots of Optimus has the blue head and some have, like Megatron, the red war paint. Makes me wonder about how things transition between the two, as if allies before Prime inevitably becomes himself again, probably dying to save Earth...or dare I say it, Beast Machines Techno-organic merge.

I dunno. I'm excited to find out though.

Re: The Last Knight: Rationale for Megatron's return?
 

I can let you know on Wednesday afternoon, but no spoilers. :)

Re: The Last Knight: Rationale for Megatron's return?
 

The biggest mistake here is trying to find rationale in Bay's movie.