Because you like Jen Yu in Crouching Tiger Hidden Dragon
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.
Keren Walker is a socialite looking to avoid work, keep a constant buzz, and be as snarky as possible. See them in Will & Grace.
Rory Williams is a caring companion whose specialty is looking after others. See them in Doctor Who.
Topanga Lawrence has been a put-together intellectual since basically the moment she could talk. See them in Boy Meets World.
R2-D2 has been in the galaxy saving business for decades. Not bad for somebody whose vocabulary is limited to "beep-boop." See them in Star Wars Series.
The Ice King is lonely and looking for a princess to sweep him off his feet. See them in Adventure Time.
Driven yet empathetic, Emily Prentiss brings humanity to the pursuit of inhuman killers. See them in Criminal Minds.
Don't ask the ruthless queen of the Tokyo underworld any questions unless you're fine with losing a limb. See them in Kill Bill vol. 1.
Jasmine dreams of something more than palace life, and she's not afraid to go get it. See them in Aladdin.
Others see him as the town nutcase, but Flint Lockwood knows his inventions will change the world someday. See them in Cloudy with a Chance of Meatballs.
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 .