<Table> <Tr> <Td> </Td> <Td> This article needs additional citations for verification . Please help improve this article by adding citations to reliable sources . Unsourced material may be challenged and removed . (July 2010) (Learn how and when to remove this template message) </Td> </Tr> </Table> <Tr> <Td> </Td> <Td> This article needs additional citations for verification . Please help improve this article by adding citations to reliable sources . Unsourced material may be challenged and removed . (July 2010) (Learn how and when to remove this template message) </Td> </Tr> <P> The Back to the Future film trilogy and subsequent animated series feature characters created by Robert Zemeckis and Bob Gale . </P> <P> The lead character of the series is Marty McFly . During the course of the trilogy, he travels through time using a DeLorean time machine invented by his friend Emmett Brown and encounters the villain, Biff Tannen, in several different time periods and visits his family ancestors and descendants . </P>

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