<P> Edna Strickland, in Back to the Future: The Game, is the sister of Gerald Strickland . She is somewhat nicer than her brother, but still set in her ways towards upholding strong morals and abolishing crime and laziness . After Marty alters her original timeline, Edna marries Kid Tannen who becomes the father of Biff Tannen . </P> <P> Jennifer Jane Parker is the girlfriend (and, in 2015 in Back to the Future Part II, the wife) of Marty McFly . </P> <P> The character was played by Claudia Wells in Back to the Future . However, Wells was not available to film the sequels for personal reasons, and the role was recast to Elisabeth Shue although Wells reprised her role as Jennifer in Back to the Future: The Game as a punk rock version of her character . Consequently, the opening scene of Back to the Future Part II was re-shot with Shue taking Wells' place, rather than using the ending of Back to the Future . In the spin - off Back to the Future: the Animated Series, Jennifer was voiced by Cathy Cavadini . </P> <P> In 1985, Jennifer attends Hill Valley High School, along with her boyfriend Marty . In the animated series, Jennifer is enrolled to Hill Valley College with Marty after graduating high school and working part - time as a tutor . She lives with her family on a ranch, the deed to the which was owned by Biff Tannen, after one of his ancestors forced Jennifer's great - great - grandfather to sign it over by holding Jennifer's great - great - grandmother hostage . In the episode "A Friend in Deed", Marty travels back in time to 1875 and sabotages the deal with help from Jules and Verne . </P>

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