Well, now we actually get a look!
You will see some kind of tech implant on the right eye, the right arm is made up of some kind of Borg-like cannon and the back of the skull is made up of metal as well.
And you will note: it's wearing the Doctor's Stetson!
Actually, we may have gotten a look at it from the previous set of pics, but possibly just from the human side.
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