Because you like Josiah Bartlet in The West Wing
Sydney Bristow is a kick-ass double agent on a mission for revenge. See them in Alias.
Sabriel is smart enough to understand the dangers that await her and brave enough to face them anyway. See them in Abhorsen Series.
Kilgrave is a domineering, abusive boyfriend. Then, add in the power of mind control. See them in Marvel Cinematic Universe.
Caleb Rivers is a bad boy with a good reason for acting out. See them in Pretty Little Liars.
Gomez Addams fills his days with ghoulish and ghastly forms of recreation, enjoying life and all its pleasures to the fullest. See them in The Addams Family.
Jasmine dreams of something more than palace life, and she's not afraid to go get it. See them in Aladdin.
David Nolan is a noble fairy tale prince with the heart of a hero, regardless of whether he can remember his past or not. See them in Once Upon a Time.
Alex Russo desperately wants to keep her magic – after all, things are so much easier when you can just wave a wand. See them in Wizards of Waverly Place.
Tina Cohen-Chang is a shy loner who becomes a fierce performer on stage. See them in Glee.
Mike Ehrmantraut is rutheless, merciless, and probably the most endearing hitman you've ever met. See them in Breaking Bad.
A Silurian lizard woman, Madame Vastra has a penchant for puzzles and interspecies romance. See them in Doctor Who.