E.L.V.I.S.: Electronic Logical Violence and Infiltration Soldier, a robot sent from the twenty-fifth century to kill Emperor Norton during a charity concert – nobody is quite sure why. The example Elvis encountered could sing and play a little, but preferred to mime and play back perfect recordings of Elvis from an extensive digital archive. It was unmasked by giving it a guitar with disabled electronics, which it was nevertheless able to “play”, and destroyed by luring it to the gold vaults at Fort Knox, where Norton used the Philosopher’s Stone to transmute it to gold and had it melted it down. It seems likely that the unknown creators of E.L.V.I.S. will try again, possibly using another Elvis duplicate.
The name comes from the Cyborg Name Generator, of course, http://www.cyborgname.com/ and I'll be crediting it in a footnote.
I have some others roughed out including including a crook, a god, and a magical doppleganger, but if anyone wants to suggest more I'd appreciate the help, and will acknowledge it, of course.