Who on Earth is mighty enough to stand up to The Avengers? A big question for fans of the Marvel comics and movies is what villain(s) will be featured in The Avengers movie who can act as worthy opponents to Thor, Captain America, Iron Man and the Hulk. What if I were to say the answer to that question were “no one,” because no one from Earth will be fighting our favorite superheroes?

Instead, we just might be seeing The Avengers battling it out against aliens! If you’re a comic reader, you’re likely very well aware of the Skrulls, the green long-eared shapeshifters who were the focus of the recent Invasion crossover event in the Marvel universe. According to an “insider” of Comic Book Movie, The Skrulls will be the primary villains of Joss Whedon’s team-up epic.

This isn’t the first time we’ve heard rumor about the Skrulls invading the Avengers movie. Almost a year ago, during the 2009 San Diego Comic Con, the guys over at C.H.U.D. (working in conjunction with Latino Review) managed to pry a little info out of some Marvel execs, which pointed to the possibility of an Avengers vs. Skrulls scenario. The golden nugget C.H.U.D. and Latino Review uncovered was that Marvel actually owns the rights to the Skrulls, and can therefore use them in a movie. (The worry was that 20th Century Fox owned the Skrull rights, since they own the Fantastic Four property, which is where the Skrulls first appeared in comic books.)

Joining the Skrulls in this rumored plot information would be the Kree, another alien species who ally with the good guys (us measily humans and our super-heroic friends) against the Skrulls. Tying that rumor into the news of Kevin Pennington signing a 3-picture deal with Marvel Studios, one of the characters he is rumored to play is a Kree.

Comparing this idea to what we know from the comics, the Skrulls have been a major player in recent years. And in the Ultimates series, where Marvel has been grabbing a lot of its ideas from for their films, the Skrulls were also the key villains, except presented in a more believable way and I can see them adapting that into The Avengers franchise.

Joss Whedon struck a chord with Marvel fans with his successful and critically acclaimed 25-issue run on Astonishing X-Men, where he told a story involving aliens who wanted to destroy our planet. This is not new to him and if this rumor has any truth to it, then Whedon’s work no doubt secured him the job of handing The Avengers for Marvel.

With Whedon’s history and the Skrulls playing a major role in the books, this might not be too off the mark. Again, this is a completely unverified rumor and the script is currently being re-worked with Whedon coming on board. He’s also reportedly re-working the script for The First Avenger: Captain America to ensure the interconnected share movie universe correctly flows into The Avengers and Marvel’s plans going forward.

As with most recent Marvel Studios rumors, we can expect some official details and major updates come San Diego International Comic-Con in July where we’ll be reporting every detail live as it breaks.

Follow me on Twitter @rob_keyes.

What do you think about introduction of alien races into the Marvel Studios movie universe?

Iron Man 2 is currently in theaters everywhere; Thor opens May 5, 2011; The First Avenger: Captain America hits July 22, 2011 and The Avengers is scheduled to debut May 4, 2012

Source: CBM & C.H.U.D.