Because you like Lisbeth Salander in The Girl with the Dragon Tattoo
Charlie Kelmeckis is a wallflower who's starting to blossom into something more. See them in The Perks of Being a Wallflower.
It doesn't matter how noble or brave he is. Jon Snow is a bastard, and people don't let him forget it. See them in Game of Thrones.
Nicky Nichols just wants to settle down with a nice girl, but being in prison is making that a little difficult. See them in Orange Is The New Black.
Darcy Lewis is a razor-sharp scientist studying things that science can't explain. See them in Thor.
They say prison changes you, and Piper Chapman is figuring that out the hard way. See them in Orange Is The New Black.
Driven and straightforward with high-technology parts, EVE was sent to Earth to see if it is habitable. See them in WALL-E.
Mike Lane is magnetic, beefy, and street-smart, but how long can he keep up with the red-light scene? See them in Magic Mike.
Anger-filled, merciless, and tortured, Kylo Ren is always at war—with the Rebel Alliance, and with himself. See them in Star Wars Series.
Char is always thinking two or three steps ahead of the enemy. See them in Mobile Suit Gundam Series.
Irene Adler has to use both her brains and her body to survive. Luckily, she's usually the most brilliant person in the room. See them in Sherlock.
Stuck somewhere between life and death, Talion is motivated by one thing only: vengeance. See them in Middle-earth: Shadow of Mordor.