The "Avengers: Age of Ultron" has been given numerous plot spoilers-all the way to the end credits. Thanks to a spoiler mentioned by Idris Elba, we know that Tom Hiddleston's character Loki is on the horizon. Is this how it will play out?

Can Loki betray Asgard for Thanos? In the first Avengers movie, he agreed to lay waste Midgard (Earth) and that would be fairly easy for Loki. But now that he's sitting on the throne of Asgard, would he sell that out to Thanos and his evil scheme of completing the Infinity Gauntlet?

We must remember that he probably does not have a choice. From What Culture:

"Remember how The Other said to Loki in the Avengers movie that, if he failed in his plans to take over the Earth, Thanos would make him 'long for something as sweet as pain?' Have you noticed that hasn't happened yet? Strange, huh?

Well, the likely explanation is that Loki saved his own skin by bargaining with Thanos - and expect that bargaining to come light in Thor: Ragnarok.

It will come to light that Loki either handed Odin over to Thanos prior to him posing as the Allfather in order to sit on the throne of Asgard, or will play a major part in giving Thanos access to Odin's trophy room, where the Mad Titan will get his hands on both the Tesseract and the actual Infinity Gauntlet - both of which are currently stored there. Perhaps the bargaining will actually have involved giving Thanos both Odin and said access to the trophy room."

Two of the Titan's main goals are in Asgard and the only imaginable way that he will keep Loki alive is if he can use him. Perhaps that will also explain how Loki deceived the Allfather Odin and grab the throne for himself.