Having quietly stolen the show in Thor with his conniving villainy, Tom Hiddleston’s Loki was a worthy adversary for the Avengers in their big-screen debut earlier this year. However, despite the character’s undoubted charisma and boo-hiss nature, Hiddleston thinks it unlikely that he’ll be returning to the Avengers sequel in 2015.
“I don’t know, and that really is the honest answer,” said Hiddleston when asked whether he would be returning. “I suspect not, only because I think that probably the audiences are tired of Loki being the bad guy. Maybe the Avengers need somebody else to fight. But I’d love to be part of it again.”
Going by the post-credits scene in the first movie, it would appear that Thanos is being lined up as the new big bad, although that may yet depend on what happens in the next set of Phase Two movies.
Loki fans can at least rest safe in the knowledge that their hero will be back to his old tricks in Thor: The Dark World, which is set to open in the UK on 8 November 2013. (Source)