Because you like Number Six in Battlestar Galactica

Though she can seamlessly flit between glamorous identities, Sydney Prosser is more vulnerable than she pretends to be. See them in American Hustle.

Topanga Lawrence has been a put-together intellectual since basically the moment she could talk. See them in Boy Meets World.

When a half-breed breaks the rules, John Constantine deports them straight back to hell. He's trying to buy his way into heaven. See them in Constantine.

Yuri is living in the afterlife, which takes the form of a high school where no one dies. But if you follow the school's rules and live a "normal" life you vanish. See them in Angel Beats!.

Andrew Glouberman is trying to make it through puberty with his sanity intact. See them in Big Mouth.

Lyra Belacqua is prone to getting in trouble, but she's also clever enough to get out of it. Most of the time. See them in The Golden Compass.

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.

Rose Tyler may have not done too well in school, but she's certainly holding her own in space. See them in Doctor Who.

Stubborn, impulsive, and fun-loving, Hallie Parker is not afraid to devise some schemes to bring her family together. See them in The Parent Trap.

Crono may not talk, but this time-traveling hero's heart speaks volumes. See them in Chrono Trigger.

Rory Williams is a caring companion whose specialty is looking after others. See them in Doctor Who.