Donald Kaufman
In Adaptation, Nicolas Cage played a man called Donald Kaufman. This guy was said to be the brother of a screenwriter called Charlie Kaufman. A lot of people who watched the movie assumed that it was based on facts. But the truth is that the character only came from the imagination of Charlie!
Jim Crow
We are sure that this name sounds familiar to you. You might not know Jim Crow, the theatre character, but you have probably heard of the old segregation laws named after him. It is probably the most notorious instance of blackface ever. Mind you, and he was played by a Caucasian guy called Thomas D. Rice.