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Señor Gif
Mark Anderson's Santa Mech Suit means the reindeer get the night off!
It may not have ballistic capabilities, but this otherwise fully-functional Portal turret might just kill you with cuteness.
And no, this one-of-a-kind unit is not for sale. It was posted on the Valve Store's own Facebook page, presumably sitting in the offices to guard development of Half-Life 3.
[pcgamer]