Following Thanos' victory in Avengers: Infinity War, it's a pretty good bet Earth's Mightiest Heroes and the surviving Guardians of the Galaxy will resort to desperate measures in order to defeat him. Speculation has it the surviving heroes will actually try to undo the Mad Titan's actions via some sort of time-travel, and while the Rosso Bros. certainly aren't speaking, numerous set photos seem to back this train of though up.

One particular Endgame theorist is pretty confident the Avengers will succeed in this, purporting that evidence already exists of their success in the very first Infinity War trailer. According to Reddit user BigMartin58's hypothesis, what we thought was a straightforward teaser for Infinity War may have actually been the first trailer for Avengers: Endgame -- sort of.

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When Infinity War came out, several scenes didn't make the final cut. The Russo brothers said some sequences were inserted into the film's marketing in order to throw the audience off, while others were simply edited out in post-production to serve the narrative. But if time travel does play a central role in Endgame, it stands to reason that the past could be altered to something that resembles at least some of Infinity War's cut or altered scenes.

The NYC Showdown

The first change that comes into question in said trailer is at the 1:00 mark, where we see Robert Downey Jr.'s Tony Stark taking off his shades with his colleagues in the background. This is during the battle of New York where Ebony Maw and Cull Obsidian come to claim the Time Stone from Doctor Strange.

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In the movie, by the time Stark removes his glasses his armor is already forming around his body thanks to his nanoparticle technology. The trailer, though, has him still in his black top before he armors up. Could this be from an Endgame scene where Stark feels he doesn't have to rush to Iron Man-out ASAP? It's unlikely, because even if something prevents Cull Obsidian from showing up, the Maw's telekinesis alone would still require everyone to defeat him. Seeing as he already showed he could take down the Sorcerer Supreme, there's no reason for Stark to go unprotected agains him, or anyone Thanos sends on the whole. Odds are this is a case where the final effects weren't finished by the time the trailer hit.

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The Train Station Brawl

At the Avenger: Infinity War trailer's 1:20 mark, we see Chris Evans' Steve Rogers catching the spear Midnight Proxima hurls at him in the train station. In the trailer, it's a very dark scene, where you only see Cap's silhouette, but in the movie he's much more fully lit. Of course, in Infinity War, there's a huge window behind him with street lights shining through the glass, so it makes sense he'd be illuminated there.

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As for this trailer, it's obvious Cap's back is against a wall with no lights, possibly indicating a slight change of scenery for this face-off. Admittedly, there isn't much here to suggest time travel, but added to the rest of the theory's point, it's somewhat interesting nonetheless.

Thanos-Infinity-War-Stones

Attack on Titan

The first try strong argument in favor of this theory comes at 1:44 in the trailer, when Thanos arrives on Titan with just the Space and Power Stones in the Infinity Gauntlet. We know he had the Soul and Reality Stones at this point in the film, but these obviously would have been major spoilers in the trailer, so it's been assumed they had to be edited out.

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But if the heroes of the Marvel Cinematic Universe do tinker with the timestream, there's a chance they might be able to save Gamora, perhaps even preventing her from getting captured on Knowhere. If they rescue the Collector, too, it would leave the Mad Titan without the latter two stones. Of course, this is all supposition, but if the Avengers are able to travel temporally, taking Stones off the table will be a primary objective, thus making this is a plausible scenario.

The Great, Big Rush!

At 2:00, there's the famous "Charge!" moment where our heroes rush a villain we never see. The Russos have since said this footage was created just for the trailer; in the movie, they're not in a forest, but in an open field as they attack the Outriders in Wakanda.

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Even more intriguing than the change in scenery is that Hulk is right there with them in the trailer. if time travel does occur ,and Mark Ruffalo's Bruce Banner fixes his issues with the Jade Giant, then that'd be the only way Hulk would be primed for battle as opposed to Banner in a Hulkbuster suit. Using time travel to bring the Green Goliath back as an equalizer against Thanos and his forces would be a smart move, but a new strategy would still be needed, because with or without the stones, Thanos can still pretty decisively beat Hulk up.

Ultimately, while these are pretty intriguing notions, it's unlikely all these scenes will be affected by messing with time. Odds are the scenes are exactly what the Russo's claim -- extra pieces of the puzzle designed to throw audiences off the true story's scent. But until Endgame arrives, we're going to continue to look for clues regarding the Avengers' plan to defeat Thanos, even though there may not actually be any "there" there.

Directed by Joe and Anthony Russo, Avengers: Endgame stars Robert Downey Jr., Josh Brolin, Mark Ruffalo, Tom Hiddleston, Chris Evans, Chris Hemsworth, Jeremy Renner, Chris Pratt, Elizabeth Olsen, Chadwick Boseman, Sebastian Stan, Benedict Cumberbatch, Paul Bettany, Samuel L. Jackson, Cobie Smulders, Benedict Wong, Zoe Saldana, Karen Gillan, Vin Diesel, Dave Bautista, Pom Klementieff, Scarlett Johansson, Tom Holland and Anthony Mackie. The film arrives on April 26.