Because you like Poussey Washington in Orange Is The New Black
Although Thomas Sharpe is an English baronet, he doesn't have a Shilling to his name. He's in America to sell his invention and marry rich. See them in Crimson Peak.
For Kazuya Mishima, the power of the Devil is now his and his alone. See them in Tekken .
Ultron is security software turned evil mastermind. See them in Marvel Cinematic Universe.
After years of living vicariously through other people's heroic stories, Wade Watts is about to become a hero himself. See them in Ready Player One.
As the Rose Bride, Anthy Himemiya is a spectator in the fencing matches fought over her and her power "to revolutionize the world." See them in Revolutionary Girl Utena.
Claire Underwood is scary intimidating, and she knows it. See them in House of Cards.
Bodhi Rook is a defected pilot for the Galactic Empire dead set on destroying the Death Star. See them in Rogue One.
This barber doesn't cut hair. Sweeney Todd sends his clients down a chute to be baked into his partner-in-crime's pies. See them in Sweeney Todd: The Demon Barber of Fleet Street.
One of seven supernatural babies who was born to a mother who was never pregnant, Ben Hargreeves is trying to save the world from an apocalypse in 8 days. See them in The Umbrella Academy.
T'Challa is a regal superhero with the weight of the world (and particularly his nation) on his shoulders. See them in Marvel Cinematic Universe.
R2-D2 has been in the galaxy saving business for decades. Not bad for somebody whose vocabulary is limited to "beep-boop." See them in Star Wars Series.