Director Joss Whedon took to Twitter on Sunday to announce that the filming of "Avengers 2 Age of Ultron," an upcoming superhero film based on Marvel Comics, is already 50 percent complete. According to a report by Movie Pilot, the movie may possibly be released before its scheduled date on May 1, 2015. 

While Josh Brolin of "Men in Black" may not be featured in "Batman V Superman: Dawn of Justice," he has managed to bag a different superhero character, as he will be the voice of Thanos, not only in "Avengers 2 Age of Ultron," but also in "Guardians of Galaxy."

Josh will first be heard as Thanos in "Guardians of Galaxy," and second in the "Avengers" series. Flickering Myth also reports that Thanos or Mad Titan's role will be much more important as well as bigger in the future "Avengers 3."

A few pictures from the set of "Avengers 2 Age of Ultron," have been released and portray the character, Quicksilver, far less absurd than his parallel in "X-Men: Days of Future Past." Even the character of the Scarlet Witch (Elizabeth Olson) is comparatively simple, as well as better in "Avengers 2." This time, she even has a costume that really works.

"Avengers 2 Age of Ultron" stars Robert Downey Jr. (Iron Man), Chris Evans (Captain of America), Chris Hemsworth (Thor), Mark Ruffalo (Hulk) and Scarlett Johansson (Black Widow). The other cast members include Paul Bettany (as The Vision), Cobie Smulders (as Maria Hill), Jeremy Renner  (Hawkeye), Aaron Taylor-Johnson (Quicksilver) and James Spader (as Ultron). In addition, Samuel L. Jackson will portray the U.S. Army veteran spy Nick Fury.

Nevertheless, it is unfortunate that fans will be missing Clark Gregg in "Avengers 2 Age of Ultron," whose storyline revolves around the fight against a robot called Ultron. The Avengers are set to reassemble for the fight this anticipated sequel.