Michael J. Fox played Marty McFly in the 1985 hit film but six years later, when he was just 29, he was diagnosed with Parkinson's disease.
Eccentric inventor Doc Brown remains one of Christopher Lloyd's most iconic roles in a career that has spanned six decades. He has been married five times and his current wife is 31 years his junior.
Lea Thompson played past, present, and future versions of Marty's mother, Lorraine Baines-McFly and in 2014 made the quarter finals of Dancing with the Stars.
Crispin Glover starred as Marty’s geeky dad, George McFly, but was left seething when he was replaced by another actor in the second film, prompting a successful lawsuit against producers.
Marty's girlfriend, Jennifer Parker, was played by Claudia Wells but she had to turn down a reprisal of her role to look after her mother who was battling breast cancer.
Wendie J. Sperber starred as Marty’s older sister in all three movies and went on to appear in numerous TV series before she sadly lost her battle with cancer aged 47 in 2005.
After Thomas F. Wilson played Biff Tannen, he voiced numerous animations including Spongebob Squarepants and is also a stand-up comedian and vlogger.