'Avengers 2: Age of Ultron' Rumors and SPOILERS [PHOTO]: James Spader Cast as Marvel's 2015 Sequel Villain in Joss Whedon's Sequel, Twitter Reacts

The Avengers: Age of Ultron is one of the most anticipated sequels in Marvel's history. Director Joss Whedon has been dropping hints here and there but one of the biggest casting updates just came out today. The main villain, Ultron, has been cast and iconic actor James Spader is filling that role. But will Spader where a suit, do mo-cap, or just voice the robotic antagonist?

Here is an excerpt from Marvel's official announcement:

James Spader will face off against Earth's Mightiest Heroes as the villain in Marvel's "Avengers: Age of Ultron," the sequel to 2012's record-breaking "Marvel's The Avengers." The Emmy Award-winning actor will play Ultron in the Avengers' much anticipated return to the big screen from writer/director Joss Whedon. The film comes to theaters on May 1, 2015. 

What do you think of this new casting update? Is Spader an actor you can see in the role of Ultron? Let us know in the comments section.

Here are some great Twitter reactions to the casting news:

Go on, James Spader. Go get 'em. @Avengers #AgeOfUltron

— Tom Hiddleston (@twhiddleston) August 29, 2013

James Spader as Ultron. Robert Downey Jr as Iron Man. Any roles for Andrew McCarthy and Jami Gertz in Avengers 2? https://t.co/VoQYF0L0Y2 — Dave Itzkoff (@ditzkoff) August 29, 2013

Ladies and gentlemen, Mr. Alan Shore meets Marvel! RT @AgentM BREAKING NEWS: James Spader set to play #Ultron in @Avengers: #AgeOfUltron!

— Djenny Unchained (@anotherrelic) August 29, 2013

I am no longer capable of regret. James Spader is playing an evil robot. — Amy von Doom (@spooloflies) August 29, 2013

I adore James Spader! Such fantastic casting.