VIDEO: Marvel Releases THE AVENGERS: AGE OF ULTRON Teaser from Comic-Con

The first teaser trailer for Joss Whedon's THE AVENGERS: AGE OF ULTRON has finally been released by Marvel, which originally debuted at San Diego Comic-Con. Check it out below!

The upcoming sequel will feature favorites from the first "Avengers" film and new Marvel characters never before seen on the big screen, including Ultron himself, set to be played by James Spader.

Avengers: Age of Ultron will hit theaters on May 1, 2015.

Continuing the epic big-screen adventures started in "Iron Man," "The Incredible Hulk," "Iron Man 2," "Thor" and "Captain America: The First Avenger," "Marvel's The Avengers" is the superhero team up of a lifetime. In the 2012 film, when an unexpected enemy emerges that threatens global safety and security, Nick Fury, Director of the international peacekeeping agency known as SHIELD, finds himself in need of a team to pull the world back from the brink of disaster. Spanning the globe, a daring recruitment effort begins.