But what makes these characters so compelling? Often, it's their complex mix of motivations, emotions, and backstory that makes them both relatable and repulsive. Take, for example, the character of Lannister family matriarch Cersei from the hit HBO show "Game of Thrones." Her Machiavellian tactics and willingness to do whatever it takes to protect her family make her a fascinating, if infuriating, character.