Natalie Portman will be suiting up as the new Thor in the upcoming Thor: Love and Thunder film in the Marvel Cinematic Universe. But before she became worthy in the films, a very meta Marvel character in the comics recognized Jane Foster's Thor by remembering Portman played her in the movies.
Jane Foster has been an integral part of Thor comics since first appearing in Journey into Mystery #84 back in 1962. While she initially serving as a love interest for the God of Thunder, the character eventually evolved into a warrior of her own, taking the mantle of Thor in Thor #1 by Jason Aaron and Russell Dauterman. The arc, which featured Jane dying of cancer while becoming worthy, is one of the best individual Thor stories, and it's going to be adapted in some form in the upcoming Taika Watiti-directed Thor: Love and Thunder. In that film, Portman will become the new Thor - which should excite at least one comic book character, Gwenpool.
In The Unbelievable Gwenpool (2016) by Christopher Hastings, Gurihru, and Clayton Cowles, Gwenpool, the fourth-wall-breaking, extremely meta antihero that's a combination of Deadpool and Gwen Stacy, is working under M.O.D.O.K. On one of her missions, Jane Foster's Thor stops her crew in its tracks - as Gwenpool is forced to fight against the Asgardian hero. After her crew gets beat up by Thor, Gwenpool tries to get her attention. In a very meta fashion, Gwenpool asks herself "what's her name? She's uh, played by Natalie Portman, uh...' before yelling "JANE!"
Thor immediately slams Gwenpool up against a wall and demands that she "speak words." That's when Gwen Poole tells her that she's got a sprained ankle and that she's "such a big fan of yours." Much like Deadpool, Gwenpool is often very aware that she's in a comic book, so calling out that Jane is played by Natalie Portman is very much in character. It's funny just a few years later, Portman would be announced as playing Thor in the MCU.
Gwenpool comics are filled with zany, meta-commentary that's hilarious and unafraid to make references outside the pages of the Marvel Comics. In this case, Gwenpool knew that Thor was played by Portman despite Jane Foster's Thor actually existing in her own universe - which bizarrely makes Portman's Thor part of the meta-canon in Gwenpool's adventures. Does Jane know about Natalie Portman? That would open up a whole other can of worms. Regardless, Gwenpool knows the truth.