13 Best Secret Cameos In Marvel Movies

6. Miley Cyrus - Guardians Of The Galaxy Vol 2

And speaking of musician cameos, it was James Gunn who once more turned to Spotify for inspiration of who to cast in Guardians of The Galaxy Vol 2 (possibly). For the post-credits Ravager sequence, Gunn hired Miley Cyrus to play another of the original Guardians Of The Galaxy line-up, though you can't see her in the line-up.

That's because, once more, Cyrus' performance was limited to just her voice, which she lent to AI character Mainframe, who is just a disembodied robot head in the sequence.