Because you like Lieutenant Worf in Star Trek: The Next Generation
Evan is a sensible kid, but being sensible isn't going to help him lose his virginity. See them in Superbad.
John Locke is an eerily calm, confident believer in the magic of the island that gave him his legs back. See them in Lost.
A fight every now and then makes Dante's life a little more interesting. See them in Devil May Cry.
Donkey Kong is a strong, banana-loving, and caring uncle to Diddy Kong. See them in Donkey Kong.
Though bold and pure of heart, Utena Tenjou has a fairytale vision of the world that can make her oblivious to its darkness. See them in Revolutionary Girl Utena.
Philip J. Fry accidentally cryogenically froze himself for a millennium. See them in Futurama.
Dewey Finn will rock you. He feels rock and roll in his blood and guts. See them in School of Rock.
The White Queen been treated horribly, but the day of her victory is almost near. See them in Alice in Wonderland.
Clarice Starling is patiently working with one serial killer to stop another. See them in The Silence of the Lambs.
It's a race against time to develop his theory of the origins of the Universe before Stephen Hawking's body and mind give out. See them in The Theory of Everything.
For Dana Scully, sometimes looking for extreme possibilities makes you blind to the probable explanation right in front of you. See them in The X-Files.