Cersei Fucking Lannister from Game of Thrones/A Song of Ice and Fire.
Seriously, I have yet to see any character as unlikeable AND egotistical as her without it being warranted by her actions. Tywin was a bastard, but he was a skilled manipulator, whose ego was totally warranted. Joffrey is worse, arguably, but he isn't as egotisical as dear old Mom. She has all the worst qualities of her family without any redeeming factors.
Never before have I seen such an idiot think she is as cunning. The only thing she has to be manipulative is her body, and she uses it with anyone she thinks could help her. Most of her plans utterly backfire on her (sure, give the power of law back to the church. Can't see that going badly.) She's almost completely responsible for Joffrey's actions. He acted against her when executing Ned Stark, but she never stopped him. And when Tommen stands up to her, she freaks out. If not everything is going her way, she freaks out, trying to find someone to blame.
Factor in the grudges she holds (mainly against Margaery Tyrell because she has the audacity to not be Cersei's *****, and Tyrion because...well, because she's a *****, basically), and the fact that she refuses to take responsibility for her actions, instead blaming anyone and everyone she can, and you have a woman where my reaction to her being marched through the streets of her city nude, being insulted by everyone, was "Well, that's a good start."
Factor in the grudges she holds (mainly against Margaery Tyrell because she has the audacity to not be Cersei's *****, and Tyrion because...well, because she's a *****, basically), and the fact that she refuses to take responsibility for her actions, instead blaming anyone and everyone she can, and you have a woman where my reaction to her being marched through the streets of her city nude, being insulted by everyone, was "Well, that's a good start."
Seriously, I have yet to see any character as unlikeable AND egotistical as her without it being warranted by her actions. Tywin was a bastard, but he was a skilled manipulator, whose ego was totally warranted. Joffrey is worse, arguably, but he isn't as egotisical as dear old Mom. She has all the worst qualities of her family without any redeeming factors.