A character in a movie isn’t just made by the actor; the director, writer, and many other creatives are deeply involved in what makes a scene work. But the one putting their face on the line is, of course, the actor, and it can happen that they don’t fully agree (or commit) to the creative vision of the film.
Actors clashing with creative decisions likely happens more often than we know, but the cases covered here are with veterans of the industry. These are the cases where the actor isn’t an amateur, but someone with a legacy worth noting, yet their voice wasn’t heard in time.
Mark Hamill, Star Wars: The Last Jedi
Mark Hamill publicly admitted he strongly disagreed with Luke Skywalker’s portrayal in The Last Jedi, saying he fundamentally viewed the character differently than director Rian Johnson ultimately did.

Harrison Ford, Blade Runner
Harrison Ford famously disliked the studio-mandated narration added to Blade Runner, later explaining he intentionally delivered the voiceover poorly because he strongly opposed including it at all.


