
Dr. Emmett Lathrop "Doc" Brown is a fictional scientist, and one of the lead characters in the Back to the Future motion picture trilogy, played by actor Christopher Lloyd in the three films and 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 the Back to the Future universe, he is the inventor of the first time machine, which he builds out of a De Lorean sports car. His earlier inventions met with limited success but he was able to create a large refrigerator and steam locomotive time machine in 1885."Doc", as he is referred to by his best friend, Marty McFly, was born in 1920, in Hill Valley, California – the novel states him to be 65 in 1985, although an episode of the animated series claims he was born in 1922. A scientist by trade, Doc is a "student of all sciences" and spends much of his time inventing. He usually has a pet dog – in 1955, his pet was named Copernicus after Nicolaus Copernicus, and by 1985, he has a dog named Einstein after Albert Einstein. Doc's role models are scientists, as evidenced by the names of his dogs and the portraits of Isaac Newton, Benjamin Franklin, Thomas Edison, and Albert Einstein found in his laboratory (which were on a wall in his home in 1955).Doc can be absent-minded at times, and despite getting around town due to his repair business (see below) he is regarded by many of Hill Valley's townsfolk as strange, eccentric, or crazy (see mad scientist). As such, he has few friends (the only friends of his we meet through the trilogy are his dogs, Marty, and Marty's girlfriend Jennifer Parker). Because of this, Doc is often seen as a loner even though he cares about the people he is close to. However, it is not known when he would have originally met Marty. The first film does not specify their original first meeting; when Marty goes back in time to 1955 the first meeting is pushed back prior to Marty's birth. Later, after Marty was born and they met again, Doc presumably remembered but kept this memory secret from the "new" Marty of the positivily altered timeline until the "original" Marty returns to the altered 1985Doc does not believe in "love at first sight" until he ends up meeting his future wife Clara Clayton in 1885, since he does not see scientifically how such a feeling works.Doc often works through the night on his inventions and can become obsessed with little things. He will always try to use a big word rather than a small one if one is available – for example, he refers to a dance as a "rhythmic ceremonial ritual". He often tends to enunciate his words with wide-eyed facial expressions and broad gestures. He is also known for his expression of the catch phrase "Great Scott!" He also likes jazz music, Jules Verne and Westerns. Although he may like to gamble, he would never use time travel for that reason. Doc does not usually drink alcoholic beverages, since he has a tendency to pass out after just one drink. As stated in the original film, he is allergic to all synthetic fabrics.Doc has been involved in illegal and criminal enterprises within the scope of the films. He cheated Libyan terrorists out of an unspecified amount of stolen plutonium he tricked them into stealing for him, and would have died as a result had Marty not intervened.