8. Lea Thompson: Then
Playing the role of Lorraine McFly, Marty’s mother, Thompson was actually a few years older than the 1955 version of the character. This is normal in Hollywood. None of the Brat Pack was young enough to be in High School, but they played teenagers more than once. It wasn’t only her age that separated Thompson from her part. “Lorraine McFly was a completely created character in my mind,” Thompson told Under the Radar. “I grew up in the 1970s, in a completely different mindset than she was–that kind of super horny virgin, pretty overt and, you know, repressed–None of that was what I grew up with. I was a modern dancer.”