Bradley Cooper talks about playing Rocket for 10 years on 'Guardians'

During the premiere of Guardians of the Galaxy Vol. 3 in Hollywood, Bradley Cooper, who voices Rocket in the film, shared that playing the character for almost a decade was a sentimental journey.

"Honestly, it was very emotional to play him," Cooper told Good Morning America.

"You really get a chance to understand how he came to be…Rocket went through a lot."

"You see Rocket's backstory, you see where he came from, you see how he became the sort of nasty little creature that he is."

The final chapter of the series, Guardians of the Galaxy Vol. 3 will offer fans a chance to understand Rocket's backstory and how he became the character he is.

Bradley Cooper added that director James Gunn is particularly attached to Rocket and relates to him more than any other character he has written.

During the premiere of Guardians Vol. 3 director James Gunn also shared that the experience of seeing how these characters affect people from all over the world has softened and made him a better person.

"I think that I was a little edgier before in not all the right ways," the director shared. "And I think having seeing how these characters affect people, seeing people from all over the world who are touched by the stories of Drax, Rocket and Groot … it softens a person a little bit."

"It's a really positive experience and so I feel I think I'm a better person," he added. "I hope I am."

"We're a family"