Because you like Blair Waldorf in Gossip Girl
A Berlin-based locksmith by day, Wolfgang Bogdanow is a world-class thief by night. He can also see out of other people's eyes, but that's a different issue. See them in Sense8.
Light Yagami has a plan to make a better world, and morals won't stop him. See them in Death Note.
Ichigo Kurasaki is a short-tempered, strong-willed teen who is deeply protective of those he loves. See them in Bleach.
Miles Morales was bitten by a radioactive spider, put on the webbed spandex, and beat up his first bad guy before his voice changed. See them in Marvel Cinematic Universe.
A super-soldier, Master Chief might be more machine than man. And for humanity's sake, thank God. See them in Halo.
With each reboot, Janet progresses more and becomes capable of human emotions. See them in The Good Place.
Basil Hallward is dominated, soul, brain, and power by Dorian. See them in Dorian Gray.
Leone Montana is a fearless hitman with a surprisingly sensitive side. See them in Leon: The Professional.
How lucky are we that Arthur Curry, the King of Atlantis, hasn't taken over the surface world? Very! See them in DC Extended Universe.
A plucky 13-year-old with a flair for the dramatic, Kiki is a witch in training. See them in Kiki's Delivery Service.