Performer(s) Appeared in Dr. Emmett Lathrop "Doc" Brown, Ph.D. is one of the main characters from Universal Studios' Back to the Future movie trilogy and related material. He is the inventor of the first time machine, which he builds out of a DeLorean sports car. His appearance and mannerisms are loosely inspired by Leopold Stokowski and Albert Einstein. Doc's only appearance in a Christmas production was, of course, the Back to the Future: The Animated Series episode "Dickens of a Christmas".