Because you like Anakin Skywalker in Star Wars Series
Khan Noonien Singh is super strong, super smart, and out for revenge. He always seems to be two steps ahead of his enemies. See them in Star Trek Into Darkness.
Ciri had a princess upbringing, and some of the facts of common people's lives are a mystery to her. See them in The Witcher.
Dallas Winston is headed down a dangerous, criminal road. See them in The Outsiders.
Zoe Benson may seem like a shy girl-next-door, but she has the inner fortitude of a powerful witch leader. See them in American Horror Story.
Kevin Khatchadourian is a disturbed, affect-less teen on a dark path. See them in We Need to Talk About Kevin.
Sometimes being a supportive girlfriend like Ophelia doesn't work out too well. See them in Hamlet.
Aldo Raine is in the killing Nazi business. And as he says, business is a-boomin'. See them in Inglourious Basterds.
Mavis Dracula's interests are anything black, scream cheese, and flying around. See them in Hotel Transylvania.
Angela Martin is uptight and puritanical, outside of the affair she's having with a co-worker. See them in The Office.
Joe West is overprotective and secretive when his children are involved. See them in DC Extended Universe.
Sophie Sheridan is a proud and independent woman who hardly ever looks before she leaps. See them in Mamma Mia!.
For Morgana, sometimes wanting to do the right thing can led you down the wrong path. See them in Merlin.