Because you like Mary Richards in The Mary Tyler Moore Show

Suzy Bishop is only 12, but her withering stare and withdrawn personality are enough to make anyone wilt. See them in Moonrise Kingdom.

Garnet is a Crystal Gem who'll protect her friends with her life. See them in Steven Universe.

James T. Kirk is more than ready to face the final frontier. See them in Star Trek.

Fox Mulder is a devoted believer in aliens, monsters, and that the truth is out there. See them in The X-Files.

A dedicated hedonist, Jack Harkness appreciates raunchy stories, stiff drinks, and excellent bottoms. See them in Doctor Who.

Elena Gilbert is the quintessential girl-next-door who gets involved with the new "boy" at school. See them in The Vampire Diaries.

With an A.I. as loyal and witty as Cortana, who needs humans? See them in Halo.

This mathematical genius doesn't have time for small talk; Alan Turing needs to break Enigma, the Nazi's cipher machine. See them in The Imitation Game.

Bobby Singer is a redneck ghost hunter, but all he wants to do is retire to the junk yards of South Dakota. See them in Supernatural.

Haymitch Abernathy is a trainer for the tributes of District 12, although he's never sober enough to give much advice. See them in The Hunger Games .

A fight every now and then makes Dante's life a little more interesting. See them in Devil May Cry.

Lyra Belacqua is prone to getting in trouble, but she's also clever enough to get out of it. Most of the time. See them in The Golden Compass.