The Marvel Cinematic Universe's movie and television branches alike are in the midst of some serious expansion. In addition to the slate of Phase 3 films and new TV series in development like Luke Cage and Marvel's Most Wanted, Marvel continues to mine its vast character stores for interesting new series. One of the challenges of bringing Marvel-branded entertainment to television, though, is finding characters who will appeal to TV audiences without being major properties – since most of their big names like Thor and Iron Man are already engaged in the MCU.

Enter smaller yet popular properties like the Inhumans (Agents of S.H.I.E.L.D.) and the Defenders (Daredevil and Jessica Jones). Even their upcoming sitcom Damage Control could contain cameos from existing characters and introduce second- and third-stringers to the otherwise powerless superhero cleanup crew. As we’ve already seen a number of smaller run Marvel characters on TV, the possibility of Brian Braddock’s Captain Britain doesn’t sound entirely far-fetched.

A recent series of tweets from award-winning Scottish artist Ciara McAvoy suggested a possible “upcoming tv series” with the mystical British Avenger collaborator (via Collider). McAvoy, who’s worked on posters for Star Wars: Revenge of the Sith and X-Men: First Class among others, initially posted a workup of a very Captain Britain-looking uniform, asking “Who will be playing Brian Braddock in the upcoming tv series #CaptainBritain?#Marvel Stay tune [sic]!” The artist states that she “can’t reveal anything yet but hopefully I'll be able to soon. Waiting for the go ahead from the co-producer.” Her later tweet mentions the Captain Britain hashtag and producers Chris Lark, whose only known property is an indie film listed as "Creative Differences," and co-producer Eleni Larchanidou (Twitter handle @moviesel5).

You can read those tweets for yourself, below:

Although nothing more than speculation at this point, McAvoy has had a clear association with other Marvel properties in the past. A recent tweet also shared some potential artwork commissioned for Doctor Strange (another magic-based character, interestingly enough), so the rumors may not be as far-fetched as initially thought. Although Captain Britain is definitely a lesser-known character in Marvel’s pantheon, he does have a fan base. First introduced in 1976 in Captain Britain Weekly #1, the character was created as a UK counterpart to Captain America by Chris Claremont and Herb Trimpe.

Gifted by magical powers by magician Merlyn and his Omniversal Guardian daughter Roma, the nebbish scientist has teamed up with Spider-Man and Cap, and is associated with villains like Vixen and Slaymaster – which is an area rife with crossover material. He is also the sister of X-Men: Apocalypse acolyte Psylocke (although her presence in 20th Century Fox’s universe makes an appearance unlikely), who even took on the Captain Britain mantle for a time. A new show in the works could mean anything from a series featuring the Captain or a British MI13 or the Secret Avengers spinoff. Also, his association with S.H.I.E.L.D. could see him visit Agents of S.H.I.E.L.D. too.

At this point, all we have to go off of are a few tweets and the inimitable power of speculation. It does seem unlikely that Marvel would go with indie-film producers, but stranger things have happened. Creating a series based a second-string character, even a popular one, isn’t farfetched either, but it's also a serious risk for Marvel. If Captain Britain does come to life on the small screen, he could wind up on streaming services, on British TV like BBC or Sky, or even on ABC as part of an international team inspired by the character. It will be interesting to see whether the rumors shape into anything more.

NEXT: Agents of S.H.I.E.L.D. Producer Talks Marvel's Most Wanted

Screen Rant will bring you updates when (and if) available about Captain Britain and his future in the MCU.

Source: Collider