Because you like Irene Adler in Sherlock
Jeff Winger thinks he's too cool for school, which is a problem because he just enrolled in community college. See them in Community.
Gollum is slimy and seething with hatred, the last person you would want to meet in a dark cave. See them in The Lord of the Rings.
Shana is a red-haired warrior with a black-and-white worldview. See them in Shakugan no Shana.
He tells you everything you need to know: "I. Am. Groot." See them in Marvel Cinematic Universe.
Jack Frost would rather crack a joke or throw a snowball than take anything seriously. See them in Rise of the Guardians.
Bella Swan thinks of it as her job to help her parents and protect her friends, even though it often ends up the other way around. See them in Twilight.
A ball of cheerful energy, Pinkie Pie is as sweet as her name suggests and lives to bring others joy with laughter and parties. See them in My Little Pony.
Waylon Smithers would do anything for his boss, and would love to do a few things *to* him. See them in The Simpsons.
Years of being the less desirable Vargas sibling have given Romano quite an inferiority complex, as well as the temper to match. See them in Axis Powers Hetalia.
Clementine Kruczynski thinks that too many guys think she's a concept, or she completes them, or she's gonna make them alive. See them in Eternal Sunshine of the Spotless Mind.
Skye is a pluck hacktivist who tries to use her power for good. Unfortunately, " good" isn't always so clear-cut. See them in Marvel Cinematic Universe.