A new development has surface regarding Marvel's new superhero movie Guardians of the Galaxy.

A new international trailer of Guardians of the Galaxy shows a little backstory of Peter Quill a.k.a Star-Lord of how he was abducted by aliens as a child and end up surviving the whole galaxy as thief.

The trailer also features the Kree Empires invasion of the universe being led by Ronan the Accuser as the Nova Corps are helpless to stop them. Commander Rael of the Nova Corps rejected the idea of having Star-Lord along with Rocket Raccoon, Groot, Gamora, and Drax to save the whole galaxy from the Kree Empire. The trailer ends with a lot of comedy and banters from both Quill and Rocket.

Meanwhile, rumors have been buzzing around that three iconic Marvel characters are making an appearance in Guardians of the Galaxy.

ComicBook.com reports that Iron Man and Nova Corps member Richard Rider will possible make an a cameo appearance due to toyline by Hasbro.

While Den of Geek reported that Adam Warlock is rumored to appear in the movie possessing the soul gem, and hinted that Thanos might get him someday just to obtain it.

In Marvel main universe, both Iron Man and Adam Warlock became members of the Guardians of the Galaxy, while Richard Rider became a frequent ally of the Guardians and a one-time member during thr Annihilation Conquest storyline.

Will Iron Man, Nova and Adam Warlock make an appearance in Guardians of the Galaxy? Sound off your comments right now!