Sylvester Stallone stars in 'Guardians of the Galaxy Vol. 2'.
The casting of the action movie legend was revealed at the San Diego International Comic-Con at the weekend when Marvel Studios premiered new footage from the film.
The 70-year-old actor only appears very briefly in the reel leading to speculation over what and how big a part he will play in the sequel, but director James Gunn has teased that Stallone has a small but significant role.
Gunn said: "It's a very, very key, important role. It's not a huge role. He's a great and key supporting actor."
The addition of the 'Rocky Balboa' star to the movie wasn't the only news shared at Comic-Con.
It was also revealed that Kurt Russell plays cosmic being Ego, the father of Peter Quill, aka Star Lord, portrayed by Chris Pratt.
Gunn wrote on Facebook of the casting: "My favourite movie as a small child was 'The Strongest Man in the World,' so I'm glad to announce that, yes, Kurt Russell has joined our cast and, yes, he is more awesome a dude than I ever could have imagined."
Unlike Stallone, the 65-year-old actor did appear at Comic-Con alongside fellow 'Guardians of the Galaxy Vol. 2' cast members Pratt, Zoe Saldana, Dave Bautista, Pom Klementieff, Elizabeth Debicki, Michael Rooker.
Filming has wrapped on the sequel and it is expected to be released on May 5, 2017.
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