The premiere date for the sequel to "The Avengers" draws closer and closer, set for a spring release, and now the final preview is here, loaded with new images that had never been seen before, as Marvel reveals the "Avengers: Age of Ultron" new trailer.

Fans of comic books are witnessing the golden age of adaptations of classic superheroes, and the "Avengers: Age of Ultron" new trailer shows off a grittier side to the Marvel Cinematic Universe, as it preps things up for what's coming in "Captain America: Civil War" set to be released in May 2016.

Digital Trends reports that the "Avengers: Age of Ultron" new trailer shows off a few characters that hadn't been shown in the two previews before this one, particularly Paul Bettany's second venture into the Marvel Cinematic Universe: The Vision.

The "A Beautiful Mind" star already voices J.A.R.V.I.S., the artificial intelligence butler that's in charge of keeping the affairs of Tony Stark in order; and now, his new character Vision (an android member of the Avengers) makes his first appearance in the "Avengers: Age of Ultron" new trailer.

According to Mashable, the guys at Disney Pictures' Marvel Cinematic Universe were feeling "generous" this past Wednesday, after they released the widely expected trailer a day earlier than they'd previously announced: the "Avengers: Age of Ultron" new trailer doesn't only show the introduction to the new character, but it's also filled with dialogue between its other stars, including character details and "goosebump-raising" moments.

As would be expected, the trailer features some of the old favorites, including Mark Ruffalo as Bruce Banner/The Hulk, Scarlett Johansson as Black Widow, Chris Evans as Captain America, Robert Downey Jr. as Iron Man and Chris Hemsworth as Thor; plus, additions to the cast like Elizabeth Olsen as Scarlet Witch, Aaron Taylor-Johnson as Quicksilver and James Spader as artificial intelligence villain Ultron.

Don't miss out the "Avengers: Age of Ultron" new trailer below!