Warning: Avengers: Infinity War spoilers below! Avoid reading if you haven’t seen the film. You have been warned.
As mentioned by Ryan Broderick from Buzzfeed, a great deal of the well-being of the Marvel Cinematic Universe, especially in Phase 1 and two depended on incidents linked to Loki (Tom Hiddleston). In the first Thor movie itself, Loki gets Thor exiled to Earth, creates drama with the Frost Giants and damages the Bifrost Bridge.
The movie ended when Loki was thrown into space, and reaching right to the pact that he made with Thanos at the start of The Avengers. Loki is assigned with obtaining Tesseract for Thanos, and he is provided the Mind Stone to accomplish his goal. In the movie, Loki fails to achieve his objective. Thor takes the Tesseract and Loki back to Asgard and leaves the Mind Stone back on Earth.
Again in Thor: The Dark World, Loki dispatches Odin (Anthony Hopkins) to Earth and replaces him. He spends four years impersonating Odin. Soon after Loki replaced Odin, Thor struggles throughout the Avengers: Age of Ultron, trying to solve the problems that the Mind Stone had created, the powers of Maximoffs’, Tony Stark getting manipulated into creating Ultron because of those powers, emergence of Vission (Paul Bettany) and others.
At the same time, Loki’s run as Odin leads to further problems, regarding the assumed creation of the Infinity Gauntlet. As seen in Avengers: Infinity War, Thanos made Eitri(Peter Dinklage) crate the Gauntlet during a destructive visit to Nidavellir. If the actual Odin were ruling then Thanos’ visit to Nidavellir would have come to Heimdall’s notice, but, the Loki/Odin had removed Heimdall and put Skurge (Karl Urban) in his place already.
Therefore, effectively it was Loki’s rule on Asgard that let Thanos get a free run for a lengthy period of time. That allowed Thanos to acquire all that he needed to get hold of the Infinity Stones, and Loki’s various dealings with Asgard and Earth made them Thanos’ targets.
In a crazy way, the troubles caused by Lokii and their impact on the overall Marvel Cinematic Universe was already felt in Thor: Ragnarok and it was assumed that there would be ripples felt in Avengers: Infinity War too.
” The whole cosmic world of the MCU was like,” Brad Winderbaum, the Executive Producer of Thor: Ragnarok, stated during a trip to the movie’s set. “‘Okay. You had Thanos, and you had Chitauri, and you have all kind of threats from above coming. But you also have Asgard; you also have these protective forces out there too.’ We make it much harder for those protections to come help our heroes.”
Avengers: Infinity War is now playing in theaters all over the world.