Scheming, manipulative, disloyal and murderous, Loki - played by Tom Hiddleston in the Thor films and the first Avengers movie - has become one of the franchise's most surprising success stories. This young man has the additional advantage of looking identical to Hiddleston in the first place. All of his vaunted powers of illusion don't seem to have allowed Loki to prevent the odd photobombing, sadly. The lady in this case actually looks a little more like Hel, the Asgardian goddess of death... still, it's a fantastic outfit and a great look.