Tom Hiddleston promoting Thor in London in April 2011. As Thor's adoptive brother and nemesis based on the deity(Loki) of the same name. Hiddleston was chosen after previously working with Branagh on Ivanov and Wallander.] Initially Hiddleston auditioned to play Thor but Branagh decided his talent would be better harnessed playing Loki. Hiddleston stated that "Loki's like a comic book version of Edmund in King Lear, but nastier."
‘Avengers’ Blu-ray: Tom Hiddleston hopes for redemption in Loki