Because you like Eli Cash in The Royal Tenenbaums

Donna is boisterous and spunky traveller of the TARDIS, exploring worlds beyond the simple mundane enterprises of Earth. See them in Doctor Who.

Andy Dwyer might not be completely literate, but he makes up for it in spirit. See them in Parks and Recreation.

Shaggy might be a bit of a slacker, but his heart and his stomach are usually in the right place. See them in Scooby-Doo.

Clarice Starling is patiently working with one serial killer to stop another. See them in The Silence of the Lambs.

When he's not working as a detective, Lucifer is driving around in a black convertible or having one-night stands. See them in Lucifer.

Arwen has to choose between a life of loneliness or love and inevitible death, both rather unfortunate options. See them in The Lord of the Rings.

The chronically bizarre Dwight Schrute is the world’s most dependable assistant to the regional manager. See them in The Office.

A fearless superhero, Carol Danvers always aims to go higher, further, faster. See them in Marvel Cinematic Universe.

GLaDOS will supply the food when you get together: a delicious cake. Of course, it could just be a trap so she can kill you. It’s hard to say. See them in Portal Series.

A few millennia in the mortal realm have caused DEATH to be quite enamored of life. See them in Discworld.

Rose Tyler may have not done too well in school, but she's certainly holding her own in space. See them in Doctor Who.

Just call Jeff Lebowski The Dude. Or His Dudeness, Duder, or El Duderino if you're not into that whole brevity thing. See them in The Big Lebowski.