Because you like Cosmo Kramer in Seinfeld
Although Theon Greyjoy is treated well, he's still essentially a hostage. And that isn't so easy for him to forgive. See them in Game of Thrones.
Innately shy, Ginny Weasley is growing into a feisty, independent spirit. See them in Harry Potter Series.
For Morgana, sometimes wanting to do the right thing can led you down the wrong path. See them in Merlin.
Todd Anderson has some “big shoes to fill” at Welton Academy, and new English teacher Mr. Keating isn’t letting him get away with staying silent in class. See them in Dead Poets Society.
Sephiroth wants nothing more than to seize the power of the Lifestream in order to become a god. See them in Final Fantasy Series.
Anastasia Steele's new boyfriend Christian might as well come with a warning label that reads "Beware: Severe Issues That Might Warrant a Trip to Dr. Phil." See them in Fifty Shades of Grey.
For somebody who won't answer questions, the enigmatic C.C. sure asks a lot of them. See them in Code Geass.
Adults call him troubled and kids call him crazy, but Donnie Darko is too busy following the instructions of a giant bunny rabbit to care. See them in Donnie Darko.
Jyn Erso is a rebellious criminal tasked with stealing the blueprint to the Death Star to find its fatal flaw before it destroys the planet. See them in Rogue One.