Dr. Emmett Lathrop “Doc” Brown, Ph.D. , is a fictional character in the Back to the Future trilogy. He is the inventor of the first time machine, which he builds out of a DeLorean sports car. The character is portrayed by Christopher Lloyd in all three films, as well as in the live action sequences of the animated series. He is voiced by Dan Castellaneta in the animated series. The character’s appearance and mannerisms are loosely inspired by Leopold Stokowski and Albert Einstein. In 2008, Dr.