Back to the Future Part II is fiction.
Back to the Future . In 2007 , the Library of Congress selected it for preservation in the National Film Registry , and in June 2008 the American Film Institute 's special AFI 's 10 Top 10 designated the film as the 10th-best film in the science fiction genre . Back to the Future Part II is a 1989 American science-fiction adventure comedy film directed by Robert Zemeckis and written by Bob Gale . Martin `` Marty '' Seamus McFly is a fictional character and the main protagonist of the Back to the Future trilogy .