'Avengers: Infinity War' trailer debuts on 'GMA,' features Thanos, heroes united and more

— -- It was the "moment" that Marvel Studios had promised! The first "Avengers: Infinity War" trailer just aired on "Good Morning America" and features all your favorite Marvel heroes from the past decade together onscreen fighting a common enemy, Thanos, for the very first time!

The clip opens with a voice-over from these heroes talking about the "idea" that was to bring remarkable superheroes together to create something greater - aka the Avengers Initiative.

From that point on, it's all out chaos and action.

From seeing Peter Parker's Spider-Sense tingle and his hair stand up as he knows danger is coming, to seeing Thanos weild the all-mighty Infinity Gauntlet for the first time, this trailer is one that certainly gives Marvel fans chills!

Other highlights include all-out war as Thanos and his army seemingly try to invade Earth, and the Avengers, old and new, standing together to stop him. Check it out in full below!

This clip is the first official footage fans have seen outside of those lucky few who attended Comic-Con this past year and it comes one day after Marvel shared a teaser, which claimed "everything you've experienced, everything you've imagined, it has all been leading to this moment."

Up to this point, Marvel Studios has released 17 films dating back to 2008's "Iron Man," with five more coming in the next couple of years. "Infinity War" is poised to feature all of the heroes fans have grown to love over the last decade, including Captain America, Spider-Man and more.

The trailer comes after Vanity Fair's big cover story on the Marvel Universe. Studio head Kevin Feige teased big changes to come in the Marvel Universe.

In the interview, Feige looked past "Infinity War" and focused on 2019's "Avengers 4," when they face off against Thanos, the most powerful villain in all the land.

It will “bring things you’ve never seen in superhero films: a finale. ... There will be two distinct periods. Everything before 'Avengers 4' and everything after. I know it will not be in ways people are expecting," he said.

But before we get ahead of ourselves, "Avengers: Infinity War" hits theaters on May 4, 2018.

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