How about stealth Megatron? He's been in there a while, from what I can see. Would they have designed a toy that looks like that first that deviates so much?
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Same can be said for the Orion Pax mould, that design first showed up in the Spotlight: Blurr comic in 2009/10 from memory, though it wouldn't surprise me if the toys were designed much, much earlier than their original release date, and maybe retouched/shrunken for release...