Because you like Aileen Wuornos in Monster
Breaking bones and hearts, Callie Torres has figured out how to put the bones back together. But the hearts? Not so much. See them in Grey's Anatomy.
Wanderer is a Soul, a parasite sent into a host to take over their body, extracting information from them and colonizing their species. See them in The Host.
Kara "Starbuck" Thrace will beat you in cards, drink you under the table, then fly circles around you in her fighter plane. See them in Battlestar Galactica.
Britta Perry has never met a cause she couldn't passionately champion—at least for a little bit. See them in Community.
His name is Chucky, and he's your friend till the end. Hidey-ho! See them in Child's Play.
Daphne Blake's unfailing enthusiasm keeps the team's morale up even as they're battling evil spirits and other ghouls. See them in Scooby-Doo.
As high-strung as she is talented, Rachel Berry both marches and sings to the beat of her own drum. See them in Glee.
Mrs. Lovett is the proud purveyor of the worst, and most grisly, pies in London. See them in Sweeney Todd: The Demon Barber of Fleet Street.
Riley Blue is trying to outrun her bad luck, but she might not be fast enough. See them in Sense8.