'The Avengers: Age Of Ultron,' 'Guardians Of The Galaxy' First Look To Air On ABC In Marvel Special As 'Captain America: The Winter Soldier' Unveils Sneak Peek Clip!

2014 is shaping up to be a big year for Marvel, and now ABC will take fans behind-the-scenes in a new special that will discuss the making of "The Avengers: Age of Ultron," "Captain America: The Winter Soldier," and "Guardians of the Galaxy."

TV Guide reports that "Marvel Studios: Assembling a Universe" will premiere on March 18 on ABC, and will feature interviews and footage from all the upcoming Marvel projects.

This is unique because unlike "Guardians of the Galaxy" and "Captain America: The Winter Soldier," this will be the first time "The Avengers: Age of Ultron" footage will be seen by the public.

Meanwhile, "Captain America: The Winter Soldier" is gearing up for its April 4 release date with a brand new sneak peek clip!

EW reports that unlike the first movie, the sequel will much darker in tone.

"Just when you think Cap has embraced the fact that his previous life is gone, his old life comes in and punches him in the face in the form of the Winter Soldier," says Marvel Studios president Kevin Feige.

"Captain America: The Winter Soldier" will star Scarlett Johansson as Black Widow, Samuel L. Jackson as Nick Fury, and newcomers Anthony Mackie as Falcon and Robert Redford as an ally of Fury known as Alexander Pierce.