"Avengers: Age of Ultron" unveils epic first trailer

The first trailer for "Avengers: Age of Ultron" was supposed to debut during Tuesday's "Agents of SHIELD," but after a leaked copy surfaced online Wednesday Marvel responded by releasing the official version of the teaser.

Marvel fans certainly weren't complaining about getting the footage a week early. And that footage -- it's a doozy.

Where to even begin? It's all set to a creepy, slowed-down version of "I've Got No Strings" from "Pinocchio" (Marvel's owned by Disney, so, synergy!) and shows Thor (Chris Hemsworth) confronting Tony Stark (Robert Downey Jr.), newcomers Quicksilver (Aaron Taylor-Johnson) and Scarlet Witch (Elizabeth Olsen) and lots of epic battle scenes. And, whatever's happening, it's apparently all Stark's fault.

"It's the end," he says in the trailer. "The end of the path I started us on."

But best/most terrifying of all is the villain himself -- Ultron, voiced chillingly by James Spader ("The Blacklist"), quoting Pinocchio and just sounding all-around evil. Yikes.

Marvel also unveiled a new poster for the film, out May 1, 2015:

Tell us: What do you think of the "Age of Ultron" trailer?