Emmett Brown

Dr. Emmett Lathrop Brown, commonly referred to as "Doc Brown" or simply "Doc", is a fictional scientist in the Back to the Future franchise. He was created by Robert Zemeckis and Bob Gale. First appearing in the 1985 film Back to the Future, he is an eccentric mad scientist and friend to the protagonist Marty McFly. In the franchise, he invents a time machine using a DMC DeLorean. He is portrayed by Christopher Lloyd in all three films and in the television series and was loosely inspired by Leopold Stokowski and Albert Einstein. Lloyd also voiced Brown on the 2010 videogame Back to the Future: The Game and the 2015 videogame Lego Dimensions. He is also voiced by Dan Castellaneta in the animated sections of the television series.