Because you like Irene Adler in Sherlock
Victor Frankenstein can create life, so he's pretty awesome if he says so himself. See them in Frankenstein.
Freddie Freeman is a superhero aficionado with a dark sense of humor. See them in DC Extended Universe.
Princess Fiona is a damsel who doesn't need saving, but she's cursed with an embarrassing secret. See them in Shrek.
Keeping your cool is just as useful in the underworld as in war, and Michael Corleone is stone-cold. See them in The Godfather.
A suave manipulator, Sebastian Valmont is valiantly fighting off a developing conscience. See them in Cruel Intentions.
Detective Alec Hardy doesn't let anyone get too close to him. See them in Broadchurch.
Jacob Kowalski is just a baker caught up in an otherworldly adventure. See them in Fantastic Beasts and Where To Find Them.
Underneath his preening narcissist exterior, Schmidt is, well, still kind of a preening narcissist. But he has a good heart too. See them in New Girl.
It's a race against time to develop his theory of the origins of the Universe before Stephen Hawking's body and mind give out. See them in The Theory of Everything.
Nick Carraway is the perfect observer: always there for the events, but never too involved. See them in The Great Gatsby.
White Witch's heart is as frozen as the land she rules. See them in The Chronicles of Narnia.