A supposition from Avengers: Endgame that Marvel establishes a British superhuman spy agency, MI-13, is supported by Blade’s unexpected appearance in Eternals. Bob Iger, then CEO of Disney, said in 2018 that a “new franchise beyond Avengers” was being planned for the MCU, which has since become synonymous with the Avengers. With that comment, the internet went into overdrive, searching for any clues about what this franchise might be.

Who is MI-13?

MI-13 is a British superhuman spy agency. Some speculated that he could be introduced following the release of Endgame and Far From Home. Fury and Hill set up shop at the Shard, which has long been associated with MI-13 in the comics. This makes it ideal for a super-spy like Fury and Hill to conduct their operations. The “Braddock” reference in Avengers: Endgame appeared to be a Captain Britain Easter egg, a nod to the family that inherits the Captain Britain mantle. Kit Harington as Black Knight and Mahershala Ali as Blade is already two MI-13 members in Phase 4 of the MCU. The MCU required a simple connection to Blade and Black Knight to MI-13.

In the post-credits scene of Eternals, Dane Whitman asserted the Ebony Blade. He did so in the desperate hope of using it to save his beloved Sersi, which was exactly what the scene showed. Mahershala Ali’s Blade interrupted to ask if he was sure he was up to this challenge. As a voice actor, he only appeared in the film because Marvel hadn’t decided on Blade’s costume at the time of filming.

Marvel is impactfully connecting Blade and Black Knight, says Eternals producer Nate Moore [on the Phase Zero podcast]. According to him:

“The Ebony Blade, the characteristics of the Ebony Blade are not dissimilar to some degree of vampirism. and we think that’s an interesting kind of thing to play with. So we kind of knew that was on the table.”

If Blade and Black Knight are tied together in the MCU, MI-13 has a much better chance of being a part of the Avengers.

The Endgame Theory Has Much Potential

In comparison to the Avengers, MI-13 would be a unique superhero team. Captain Britain is undoubtedly one of their most well-known members. Despite this, they are, in fact, a shadowy spy agency. Because of this, they’re better suited to action-packed espionage tales or stories in which the characters face supernatural threats. They’ve had to deal with vampires regularly, and Blade isn’t the only one; Spitfire was bitten by a vampire but remained a hero despite the bloodlust. In the wake of Marvel’s success with spy dramas like Captain America: The Winter Soldier, MI-13 has a lot of potentials.

MI-13 has never been a big part of the comics. However, Marvel has proven time and time again that they can turn low-level concepts into high-level stars. A new TV series featuring Samuel L. Jackson’s Nick Fury is based on the “Secret Invasion” comic book event, and it will air on Disney+. Secret Invasion could follow the comics’ lead and further establish MI-13. Given that Fury was already based there in Spider-Man: Far From Home, this is so. There is a lot of potential here, and hopefully, it will be realized in the future. There is no denying that Blade’s involvement in Eternals lends credence to the Endgame scenario.