'Avengers: Endgame' Theory Says Loki Uses the Tesseract to Time Travel

This explains how he'll alter history in 'Loki' on Disney+.

The God of Mischief might use the rules of time travel from Avengers: Endgame to alter history in his new Disney+ show, aptly titled Loki. While the new series isn’t set to hit Disney’s new streaming service until 2021, early plot details are rumored to involve Loki tampering with and possibly altering historical events.

But how exactly could Loki time travel? Well, a mind-blowing new theory suggests he’ll use a combination of the Quantum Realm and the Tesseracthop through alternate dimensions without disturbing the main timeline. Sounds confusing, right? Let’s break it down.

Loki in Thor: Ragnarok
That smile can only mean trouble.

Redditor u/EmansMovieReviews proposed a wild and convoluted theory surrounding the events of Loki’s new series. Basically, Loki could use the Tesseract and the Space Stone contained within it to enter the Quantum Realm and appear in different dimensions “where the science works differently and exit that dimension to bring him into a different point in time or reality.”

The idea is that the Space Stone wouldn’t affect or alter time when used on its own and Loki could hop right back to the point when he disappeared in Endgame without causing massive chaos to his own timeline.

It’s definitely a lot to unpack, especially since time travel is confusing no matter how much Avengers: Endgame tried to explain it. Before really delving into this theory, it’s best to remember that the premise of the Loki series is still just a rumor and hasn’t been confirmed by any major sources. Still, the idea is clever in that it figures out a way for the god to run amok and alter historical events without technically affecting the main events of the Marvel Cinematic Universe. Plus, the Tesseract explanation provides a “workaround for time travel” without relying on the Quantum Realm alone. After all, they’re both able to open up dimensions, providing a different gateway for time travel.

However, this version of Loki can’t be anyone other than the alternate version of his character that Endgame created, especially since the film changed what actually happened to him in The Avengers movie. And with the potential to use the Space Stone, Loki could wind up in random places and timelines he didn’t mean to visit. Though this theory could only work under the assumption that the Space Stone has no precision when it comes to time travel.

loki avengers endgame
Loki always has a plan up his sleeve. 

Knowing Loki, he could even disguise himself as the Ancient One in 2012, intercepting Captain America on his mission to return the stones to their rightful times? It’s definitely a long shot, but hey, the God of Mischief has pretended to be his own father and so many others (like Captain America) before, so it’s not outside the realm of possibility.

An interview with Entertainment Weekly might help to back up this theory. Tom Hiddleston revealed that Loki will explore “new territory, a new world, new challenges.” This implies that he’ll indeed be lurking in worlds we have not yet encountered within the MCU. In fact, Jane becoming Mighty Thor in Thor: Love and Thunder could even tie back into Loki’s history-altering adventures. After all, Endgame might have tricked us into believing that time can’t be changed, but with the MCU’s version of the multiverse coming into play, Loki presents endless possibilities.


Avengers: Endgame is now on Blu-ray/DVD and digital. Loki will premiere on Disney+ in 2021.

Media via Marvel Studios