Chris Evans thinks of Chris Hemsworth to be ''like a brother''.

The 33-year-old actor, who stars as Captain America in 'The Avengers: Age of Ultron', has revealed that he and his Australian co-star - who plays Thor - have developed a strong bond over the years, in part because their careers have followed a similarity trajectory.

Asked if Hemsworth is his best friend among the 'Avengers' team, he said: ''Oh yeah, [Chris Hemsworth] is like a brother at this point. We've had a very similar trajectory in, at least, being welcomed into this world.

''We both took these [Marvel hero] roles. We were both timid and nervous and didn't know how it was gonna play out. It's been nice to kind of share this with him.''

Evans revealed his co-star helped him make the transition into the Marvel franchise, where they both star alongside the likes of Robert Downey Jr., Mark Ruffalo and Scarlett Johansson.

He told Esquire magazine: ''We each have the standalone films as well, which can be a whole separate element of pressure and anxiety, and he's just been so helpful to me. Just to have someone else who's going through the same struggles I am.''