Because you like Alyx Vance in Half-Life 2

A crabby troll, Karkat Vantas is perpetually angry about his lot in life. See them in Homestuck.

Christine Daae has been secretely taking lessons from a phantom musician. It sounded less creepy in her head. See them in The Phantom of the Opera.

He's an eccentric pirate making it up as he goes along. He's Jack Sparrow, savvy? See them in Pirates of the Caribbean: the Curse of the Black Pearl.

The crown prince of the Fire Nation, Zuko has been ordered by his father to find the long-lost Avatar before he is allowed to return home. See them in Avatar: The Last Airbender.

Angel is fighting as best as he can, but the disease might be too powerful for even his strong, positive energy. See them in Rent.

The only thing that can match Rose's looks are her hot temper and free spirit. See them in Titanic.

Nina Sayer finally landed the role of prima ballerina, but as tension ramps up in rehearsal, she starts losing her mind. See them in Black Swan.

Cinderella will sacrifice herself to keep her family's memory alive. See them in Cinderella (Live Action).

Quentin has his whole life mapped out. It might sound boring, but he likes boring. See them in Paper Towns.

A grumpy tourist trap owner, Grunkle Stan has a few deep secrets. See them in Gravity Falls.

Dutiful, composed, and aloof, Sun Bak is the fighting force behind her team of eight "sensates" who are telepathically linked. See them in Sense8.