Because you like Emmett Brown in Back to the Future

In charge of stocking the office's supply of cigarettes and liquor, Joan Holloway could run the whole company if they would let her. See them in Mad Men.

Christopher Turk is bringing his A-game to his next big challenge: becoming a surgeon. See them in Scrubs.

Ariel knows there's a whole other world above the sea, but exploring it comes at a big price. See them in The Little Mermaid.

Effy Stonem is cool and collected with a wry smile on her face and a cigarette between her lips. See them in Skins.

With most of the people that Sango loved now gone, the only thing she wants is to kill the demon who destroyed her village. See them in Inuyasha.

A fun-loving jokester, Alistair isn't ready for the responsibilities he faces. See them in Dragon Age Series.

For somebody who won't answer questions, the enigmatic C.C. sure asks a lot of them. See them in Code Geass.

A beacon of positivity with a brilliant legal mind to boot, Elle Woods breaks down stereotypes about what girls can and can't do. See them in Legally Blonde.

It is a truth universally acknowledged that Elizabeth Bennet doesn't suffer fools or prideful men. See them in Pride & Prejudice.

Nomi Marks is a brilliant hacker with an open-minded, accepting spirit. See them in Sense8.

Greg Hirsch is new to the Roy family's cutthroat world of wealth and privilege. See them in Succession.

Sheldon Cooper is brilliant in every way except, well, interacting with any human being. See them in The Big Bang Theory.