10 Times The MCU Broke Its Own Rules

10. The Bifröst Bridge Being Broken Is Suddenly No Big Deal - The Avengers

An early instance of the MCU blatantly doubling back on one of its own rules is its treatment of Asgard's Bifröst Bridge.

At the end of the first Thor film, the bridge is willingly destroyed by Thor (Chris Hemsworth) in order to thwart Loki (Tom Hiddleston), who quite blatantly warns him, "If you destroy the bridge, you'll never see [Jane Foster] again!"

The film ends with Thor stranded on Asgard, only for this to be carelessly hand-waved in The Avengers the very next year.

As Thor arrives back on Earth, Loki simply quips, "With the Bifrost gone, how much dark energy did the All-Father have to muster to conjure you here?". And by the time Thor: The Dark World came around shortly thereafter, the Bifröst had already been rebuilt.

Clearly Joss Whedon struggled to find a way out of the corner Thor wrote him into, because dismissing a major dramatic beat from that movie with a casual one-liner in The Avengers was not only lazy and unsatisfying, but entirely contradictory of the stakes it tried to establish. Boo.