Cersei (played by Lena Headey)

On one hand -- OK, on all hands -- it's gross that Cersei hooked up with her brother Jaime (Nikolaj Coster-Waldau). But you have to give her credit for being a good mom, right? She knows Joffrey (Jack Gleeson) is a horrible person and she knows that his incestuous breeding only makes him worse. At least Myrcella and Tommen are good kids.

Cersei is also really smart, ambitious and conniving, and all of her enemies should -- and do -- fear her. Perhaps Joffrey, too, should start fearing her.

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(HBO)