Because you like Anya Jenkins in Buffy the Vampire Slayer
Rose Hathaway is a reckless, rebellious smartass who's training to be a royal vampire guardian. See them in Vampire Academy.
Jason Bourne is suffering amnesia, but considering what he's done as a CIA assassin, maybe that's for the best. See them in The Bourne Identity.
Freelance writer Diane is dating a dog and writing a memoir of a horse. See them in Bojack Horseman.
Holden Caulfield is convinced that the whole adult world is full of phonies. See them in The Catcher in the Rye.
Ash Williams is a houseware clerk at S-Mart and the Chosen One. See them in The Evil Dead.
The Terminator is an emotionless killing machine who won't stop until he's changed the future. See them in The Terminator.
A precocious 11-year-old, Satsuki Kusakabe is not quite as grown up as she pretends to be. See them in My Neighbor Totoro.
Artemis Fowl understands the way of the world. If he wins, he's a prodigy. If he loses, then he's crazy. That is how history is written. See them in Artemis Fowl.
Introspective Theodore Twombly would rather observe life than participate in it. See them in Her.
Armed guards, FBI agents, notorious serial killers – Hannibal Lecter has bested them all, with time to finish dessert afterwards. See them in The Silence of the Lambs.