All information here was gathered from the Back to the Future films, the Back to the Future animated series, the novelizations of the films, the screenplays, and other such things. I made none of this up, and what I didn't know I put down as "unknown." All these characters I consider main and essentual people (i.e. they were in more than one film and/or cartoon episode) in the Back to the Future series, without which the BTTF series would fall apart. Characters are listed in alphabetical order.

Full Name: Dr. Emmett Lathrop Brown

Birthdate: 1920

Occupation: Scientist and inventor

Hobbies: Inventing, science, traveling through time, reading Jules Verne, collecting clocks

Favorite Expression/Best Line: "Great Scott!"

Extra Tidbit: Doc and Clara were married on December 15, 1885.

Full Name: Clara Clayton Brown

Birthdate: 1855

Occupation: Schoolteacher

Hobbies: Time traveling, science, gardening, reading Jules Verne

Favorite Expression/Best Line: "I believe you've underestimated me, mister." Then she kicks Buford Tannen!

Full Name: Jules Eratosthenes Brown

Birthdate: Unknown, but probably in late 1886 or early 1887.

Occupation: Student

Hobbies: Inventing, science, traveling through time, insulting his brother

Favorite Expression/Best Line: To Verne in the animated series episode 'Brothers' while the two are having an argument: "You upstart, overgrown mass of immature parasitic lifeform!"

Full Name: Verne Newton Brown

Birthdate: October 29, 1888

Occupation: Student

Hobbies: Comic books, video games, time traveling, insulting his brother

Favorite Expression/Best Line: To Verne in the animated series episode 'Brothers' while the two are having an argument: To Marty in the animated series episode 'My Pop's an Alien' after Marty sarcastically claims that he's Michael J. Fox: "You do sorta look like that J. Michael Fox guy."

Full Name: George Douglas McFly

Birthdate: April 1, 1938

Occupation: Writer

Hobbies: Writing, science fiction, "birdwatching" ;-).

Favorite Expression/Best Line: "Last night Darth Vader came down from planet Vulcan and told me that if I didn't take Lorraine out, that he'd melt my brain!"

Full Name: Lorraine Baines McFly

Birthdate: 1938

Occupation: Unknown

Hobbies: Tennis

Favorite Expression/Best Line: "That's your name isn't it? Calvin Klein? It's written all over your underwear."

Full Name: Martin Seamus McFly

Birthdate: June 20, 1968

Occupation: Student

Hobbies: Playing guitar, listening to rock 'n roll, skateboarding, hanging out with his girlfriend, Jennifer Parker....and time travel

Favorite Expression/Best Line: "This is heavy!"; "Nobody calls me chicken!"

Extra Tidbit: Marty met Doc Brown in a most unusual way: "A couple of years ago, he showed up at my house and hired me to sweep out this garage of his. He pays me 50 bucks a week, gives me free beer...and gives me total access to his record collection--he's got this great old record collection."*

Full Name: Jennifer Jane Parker

Birthdate: October 29, 1968

Occupation: Student

Hobbies: Unknown

Favorite Expression/Best Line: "I'm old!"/"I'm young!"

Full Name: Biff Howard Tannen

Birthdate: March 26, 1937

Occupation: Auto detailing

Hobbies: Bugging the McFlys

Favorite Expression/Best Line: "What are you lookin' at, butt-head?" "Hello, is anybody home?"

*Quoted from the 4th draft (10/84) screenplay of the original Back to the Future by Robert Zemeckis and Bob Gale, on page 14. To find out where to get these screenplays, click here.