These are two of the Nazgul. The Nazgûl (also known as Ringwraiths, The Nine, The Fallen Kings, Black Riders, Nunbolg, Dirty Cops, Lawyers, FBI Political Hacks, or Ulairi in Quenya) were the dreaded ring-servants of the Dark President.
Can I please be an elf queen or something?
I have created the only Tolkien dictionary in the world, as far as I know - on line. Unfortunately I can not link from my Kindle, but you can find it easily on search - if interested. Bob I