The Avengers will face a serious threat in new enemy Ultron, but the latest TV spot for "Avengers: Age of Ultron" is definitely on the lighter side. When called "boss" by Maria Hill (Cobie Smulders), Iron Man (Robert Downey Jr.) jokes that Captain America (Chris Evans) is the real boss. "I just pay for everything and design everything, make everyone look cooler..."

The 1-minute spot shows most of the characters in action - including Thor (Chris Hemsworth), Hulk (Mark Ruffalo), Black Widow (Scarlett Johansson), Hawkeye (Jeremy Renner), Scarlet Witch (Elizabeth Olson), and even a quip from Quicksilver (Aaron Taylor-Johnson). James Spader voices Ultron (who notes that "it's time for some fun"), and the big sequel cast also features Paul Bettany, Anthony Mackie, Hayley Atwell, Idris Elba, Stellan Skarsgård, and Samuel L. Jackson.

"Age of Ultron" will be released May 1. Are you ready to have some fun?