Paul Walker - Fast and Furious 7
Paul Walker tragically passed away towards the end of filming the seventh Fast and Furious movie.
The actor, who died in a horrific car crash in November 2013, still had a number of scenes to film. He played one of the leads, Brian O'Conner, and it has since been confirmed that his character will 'retire' in the seventh movie.
The Hollywood Reporter stated that Brian will exit from the group, rather than die, and that the script will be "tweaked". They added that "foortage of the late actor's Brian O'Conner character can still be used".