In case you were somehow fuzzy on the lineup of heroes assembling in "Avengers: Age of Ultron," the latest trailer for the Marvel Studios film features a handy roll call of the team's eight members. The original sextet from 2012's "Marvel's The Avengers" all get action shots and quips in the promo, and newcomers Scarlet Witch and Quicksilver get a chance to shine as well. In addition to the eight Avengers, you can also spot Maria Hill, Nick Fury and War Machine in the clip -- and we can't forget that the Vision has a part to play in this film even if he didn't make it into the newest trailer. So we know that a dozen good guys have a part to play in the movie...but apparently there are more to come.
In a new interview with Marvel.com, writer/director Joss Whedon revealed that yes, we will see even more Marvel characters in the movie that have not been revealed in promo photos and trailers for the film. Who could Whedon be talking about? We have a few guesses.
THE SURE THING: Falcon
Thanks to the credits included on the film's official poster, we know that a number of Marvel actors are locks to make an appearance in the film. Hayley Atwell will appear as Peggy Carter and Idris Elba will return as Heimdall. Anthony Mackie's return as Falcon is also guaranteed and, considering how big of a role the winged character has played in Avengers comics over the past 35 years, his inclusion could hint at an increase in his movie profile. Could Falcon become a full-fledged Avenger by the end of the film? We'll keep our fingers and/or wings crossed.
THE SAFE BETS: Black Panther & Doctor Strange
While they're not guaranteed to make an appearance like Mackie, it seems like a safe bet to assume that either Black Panther or Doctor Strange could make a quick cameo in the film. Both of the heroes have solo films later in Marvel's slate, and they both have actors cast. Chadwick Boseman is expected to make his debut as Black Panther in "Captain America: Civil War," but there's no reason why he can't appear even sooner. It's not known whether Benedict Cumberbatch's Strange will appear before the release of his solo film in November 2016 or not, but the actor was officially cast as the Sorcerer Supreme before "Age of Ultron" conducted reshoots in January.
THE LONGSHOT: Spider-Man
Ever since Marvel and Sony finalized a deal to share the iconic wall-crawler and incorporate him into the Marvel Cinematic Universe, fans have been eager to see the new Spidey onscreen. People can't wait for his next solo movie, scheduled for July 2017; they want to see Spider-Man now, which has led to rumors of his possible inclusion in 2016's "Captain America: Civil War." Marvel could capitalize on this excitement by including a shot of Spider-Man at some point during the film, possibly in full costume so as work around the fact that -- as far as we know -- Spider-Man has not yet been cast.
THE WILDCARD: Spider-Woman
Along with the deal for Spider-Man, it's likely that Marvel now has access to Spider-Man's extensive supporting cast for use in the Marvel Cinematic Universe. Of all the characters we most want to see brought into the MCU, Spider-Woman makes the most sense for an "Avengers" appearance. Jessica Drew has seen her profile raised considerably I the comics over the past decade, and she's grown into the role of stalwart Avenger. She's even received a movie-ready makeover courtesy in her current ongoing series. There are a few reasons why she's a wildcard, though. Marvel hasn't really indicated that they do have access to every character with Spider in their name, there have been no rumors attached to Drew's involvement, and -- even though their characters are only tangentially related to each other -- logic dictates that Marvel would introduce Spider-Man before Spider-Woman. Still, wouldn't this be awesome?
THE BIG SURPRISE: Captain Marvel
Similar to when Beyonce dropped a new album overnight without warning, can you imagine the fan frenzy that would be whipped up if Marvel revealed their Captain Marvel actress not with a press release but with a post-credits reveal in "Age of Ultron"? Unlike Black Panther and Doctor Strange, Captain Marvel is one Marvel hero who has a movie on the slate but no actor announced to play the role. "Captain Marvel" isn't due in theaters until November 2018, but that doesn't mean she can't pop up in a few movies before then. Sneaking Captain Marvel into "Age of Ultron" would blow fans' minds, and it would potentially trump the big Thanos reveal after "Marvel's The Avengers." Come on, Carol Danvers, the Avengers need you!