Because you like Alastar Mad-Eye Moody in Harry Potter Series
Shana is a red-haired warrior with a black-and-white worldview. See them in Shakugan no Shana.
A few millennia in the mortal realm have caused DEATH to be quite enamored of life. See them in Discworld.
Murph is inquisitive, compassionate, and stubborn, with a passion for science she shares with her dad. See them in Interstellar.
Kevin Khatchadourian is a disturbed, affect-less teen on a dark path. See them in We Need to Talk About Kevin.
If you need her, Lisa Simpson will be in her room with her saxophone and a good book. See them in The Simpsons.
Because of Miles Edgeworth, the truth will always make itself known. See them in Ace Attorney Series .
It's hard enough fighting a war. But it's worse for Commander Shepard, knowing no matter how hard you try, you can't save them all. See them in Mass Effect.
The vampire that killed Zero Kiryu's family also infected him, and he starts to crave blood, much to his horror. See them in Vampire Knight.
King Schultz is about as color-blind as a man of his era can be. See them in Django Unchained.
Marv is a brutish but principled thug who'd be right at home on an ancient battlefield. See them in Sin City.
Po is a clumsy, friendly panda who likes to take it easy. But now he's expected to save the world? See them in Kung Fu Panda.
A vampire hunter, Integra Hellsing doesn't tolerate failure, least of all her own. See them in Hellsing.