Orb of Alikyr
From Tardis Wiki, the free Doctor Who reference
The Orb of Alikyr was a device of Ice Warrior construction which was designed by Sezhyr as a form of essence-container. It actually had a degree of autonomy where it operated by with a degree of autonomy, This machine sought potential wearers where it fixed itself on their faces and reprogrammed those with a human physiology whereupon they were replaced the host consciousness with that of the Martian Sezhyr. (AUDIO: Thin Ice)
