Ralph Fiennes with a Death Eater or whatever the heck

Ralph Fiennes poses with a dude in a skull mask at the world premiere of the film Harry Potter and the Deathly Hallows Part 1. This was at the Odeon Leicester Square in London, England on November 11, 2010. You'll excuse us if we haven't followed the Harry Potter oeuvre closely enough to recognize this skulled critter; we vaguely remember hearing that the books include villains called Death Eaters, so we're going to go with that here. Say hello to the Death Eater, the naughty creature with the on-the-nose name! Perhaps the book also has characters called Life Enhancers or Hero Angel Goodies, whatever. We also don't know if this particular Death Eater is part of the premiere staff or just a fan asking for a selfie with Ralph -- a Relphie, as it were. So many questions.