The new record-breaking full-length trailer for the soon-to-be released "Avengers: Age of Ultron" provides a glimpse of what fans should expect once the movie comes out on the big screen. 

In the third trailer for the movie, Scarlet Witch (Elizabeth Olsen) makes an appearance and shows what she can do for the Avengers — that is, after she decides to switch sides from being an Ultron ally to an Avenger. Marvel also released a new poster for the film that features Olsen's character. 

The third trailer for the sequel to the blockbuster hit "Marvel's The Avengers" also shows the thrilling battle between the team of protagonists and the villain's horde, and how the superheroes clash amongst themselves. But apart from the action-packed sequences, it also teases fans on the budding romance between Dr. Banner and Natasha, who can be seen almost kissing each other. 

If the new trailer is an indication of how well the new film will do in the box-office, then it is already guaranteed a big outcome in terms of ticket sales. Apparently, the new trailer broke the record set by the previous trailer, which garnered 34.3 million global views within 24 hours. This time, the new "Avengers" trailer was viewed 35 million times within the same span of time after it was released. 

Aside from Olsen, the star-studded cast of "Avengers: Age of Ultron" includes Robert Downey Jr. who reprises his role as Tony Stark/ Iron Man, Chris Hemsworth as Thor, Chris Evans as Steve Rogers/ Captain America, Mark Ruffalo as Bruce Banner/ The Hulk, Scarlett Johansson as Natasha Romanoff/ Black Widow, Jeremy Renner as Clint Barton/ Hawkeye, Samuel L. Jackson as Nick Fury, and Idris Elba as Heimdall. 

James Spader also joins the cast of the film as Ultron, Tony Stark's artificial intelligence project gone wrong — its main goal is to bring peace on Earth by completely wiping out humanity. 

"Avengers: Age of Ultron" is slated for an international release on May 1.