For a while I've had a spare universe Inferno head on a headless KO universe Megatron with a half-assed idea of turning it into Galvatron.
I was messing around with it this weekend discovered Titan Masters could fit in the head socket.
I'm using a Ptero at the moment as a stand-in but I will be looking for a Megatron titan master (Doomshot?)
I also repainted the KO and moved the fusion cannon to the side of his arm.
He's the happiest Megatron ever!
I also painted Inferno's wings on his head to see how it'd look. I think it does well evoking the G1 look.