Ungarr

Ungarr was the username of someone who failed to make a successful bid on the Doctor's TARDIS in a GalMart online auction. He also referred to himself as "Ungarr the Unforgiving". His silhouette resembled a massive Viking warrior, and the Twelfth Doctor suspected from the outline of his helmet he was probably an eight-legged Hyranian Ore raider. The bid was withdrawn when the GalMart computer confirmed that the TARDIS did not come with a key. (PROSE: Buyer's Remorse)