Interesting, rare and sometimes cheap ebay items.

[SuspectimusPrime]

This seller makes a habit of selling loose official figures, probably nicked from the factory or the reject bin. so I'm going with either upcoming official figure in some capacity (maybe the mystery 7th subscription figure) or as suggested something already relesed in bad light. thing is it looks brown to me.

it's also very interesting that he has boxed MP megs for sale as well, possibly a re-release in the works.

At least his photos are always really clear, so it isn't bad light - it's definitely brown and silver, and the other colours on it are quite clear.
I just remembered what I noticed yesterday... the Decepticon symbol is red, so it's definitely a Mirror-verse figure, so odds are it is a Fun-Pub or Ehobby exclusive.

Does anyone remember offhand, if Mirror-verse Rumble or Frenzy are brown?

Never mind, I just looked it up - Frenzy is apparently Eject's colours (dark blue), and Rumble is thought to be Rewind's colours (black) but the only frame shows him surrounded by fire, so he looks brown.

Maybe it's Shattered Glass Enemy... for ultimate obscurity.

The only thing we can surmise is that Hasbro does not put locks on their factories