Because you like David Nolan in Once Upon a Time
Yugi Moto is a gentle soul whose determination and talent make him a formidable opponent. See them in Yu-Gi-Oh! .
With each reboot, Janet progresses more and becomes capable of human emotions. See them in The Good Place.
Most of the world has been wiped out from The Beast. And when The Beast comes, Cole MacGrath will be ready. See them in inFAMOUS.
Violet Harmon takes teen angst to a paranormal level. See them in American Horror Story.
Evan is a sensible kid, but being sensible isn't going to help him lose his virginity. See them in Superbad.
It turns out the girl of your dreams just might have dreams of her own. See them in (500) Days of Summer.
Fiona Gallagher wants to be able to give her siblings everything that they deserve because her parents aren't going to do it. See them in Shameless.
V is a violent anarchist with literally nothing left to lose. But, he might have a point. See them in V for Vendetta.
Foul mouthed and disturbingly comfortable with violence, Hit-Girl is a precocious assassin who doesn't need anyone's protection. See them in Kick-Ass.
John Locke is an eerily calm, confident believer in the magic of the island that gave him his legs back. See them in Lost.