The 24-year-old singer may be coming back to her Disney roots as the voice of the character Mainframe, reported People magazine.
The news made its way online after a press junket for the James Gunn-directed film.
Actor Dave Bautista, who reprises his role as Drax The Destroyer in the second installment of the franchise, seemingly confirmed the news during an interview with Huffington Post.
He said, "I heard that she's (Miley) uncredited and a voice somewhere."
The movie is slated to release on May 5.