Because you like Cosima Niehaus in Orphan Black
Diana Prince is using a truth-telling lasso and super-strength to make Earth a little more like Paradise. See them in DC Extended Universe.
A reclusive introvert, Liz Sherman has a temper that's literally lethal. See them in Hellboy.
The black sheep of his family, Rhett Butler grew up to have charm and to see things as they are. He just doesn't give a damn anymore. See them in Gone with the Wind.
In his transformation from hardened convict to moral paragon, Jean Valjean is the kind of man we should all aspire to be. See them in Les Miserables.
Lois Lane's journalistic success is the result of her tenacity. She will doggedly pursue her leads until discovering the information she needs. See them in DC Extended Universe.
Emma Woodhouse knows what's best for everyone else. Just don't try to tell her what to do. See them in Emma.
Anna Karenina doesn't want to be a respectable woman any more. She thinks respect was invented to cover the empty place where love should be. See them in Anna Karenina.
Carol Aird is driven to fight to make her life better, regardless the consequences. See them in Carol.
Tina Goldstein is better at getting the job done than following the rules. See them in Fantastic Beasts and Where To Find Them.
Aang is already a master airbender and once he learns to manipulate water, earth, and fire, he'll be truly unbeatable. See them in Avatar: The Last Airbender.
Years of being a social outcast have taken a toll, but Elphaba is willing to be wicked if it means she can do good. See them in Wicked .
With her consciousness so easily shifted between bodies, Motoko Kusanagi is left unsure of who or what she really is. See them in Ghost in the Shell.