Marvel may be working hard to keep its secrets ahead of "Avengers: Endgame," but it is not an easy feat, particularly given how many films and actors are tied to the film.

With "Captain Marvel" coming out in March, Samuel L. Jackson has been doing press, and he spilled some interesting information during an Entertainment Tonight interview. In fact, he may have let slip some big spoilers involving Captain Marvel (Brie Larson).

Possible spoilers ahead. Read on at your own risk.

Jackson, who plays Nick Fury, had been asked why Captain Marvel is the right superhero to  headline her own movie, so he opened up about her and how she's "pretty much the strongest character" in the MCU. However, in doing so, he revealed some intel that had not yet been confirmed in the films, as Esquire pointed out.

"I mean, [the Avengers] are up against some really, really tough odds right now -- we saw throughout 'Infinity War' -- so now we know that we need something that's as powerful as Thanos," Jackson told ET. "And at some point, we'll find out how powerful she is and all the things that she's capable of. She's one of the few people in the Marvel universe that can time travel, so..."

Jackson trailed off, but he had already given fans a lot to salivate over. Tying Captain Marvel to Thanos (Josh Brolin) and the Avengers' plight aligns perfectly with a popular fan theory. Many MCU fans have been speculating that when we see Fury and Carol Danvers together in "Captain Marvel," she'll give him the old-school pager he used to call her as he turned to dust in "Avengers: Infinity War." Additionally, they expect that she -- and her time travel abilities -- are a key part of the one way to defeat Thanos that Doctor Strange (Benedict Cumberbatch) saw in his visions.

While it's interesting to consider, we still have about 14 million more questions.

"Avengers: Endgame" is due out April 26.

[via: ET; h/t: Esquire]