Mainframe is an alternate universe version of Vision, played by Paul Bettany in "The Avengers" films. In the future of "Guardians of the Galaxy," Vision evolves to be the operating system of an ...

Miley Cyrus, according to Guardians director James Gunn, has an uncredited voice role as Mainframe, a robotic warrior designed by Iron Man, in the brief teaser scene following the film. Why Miley?