If there's one thing that makes "Game of Thrones" so sinfully fun to watch (and there are many), it is the presence of some truly evil characters. While the series enjoys playing with audience expectations and with blurring clear-cut boundaries of good and evil, the following are some of the characters that are, without a doubt, truly evil.
When it comes to royals behaving badly, no one illustrates this more fully than Joffrey, who has shown time and again that there is really little to nothing about him that would qualify as good. From his torturing of Sansa to his unwillingness to follow any advice but his own wishes, Joffrey has shown that there is an evil core to his being that cannot be dispelled. Although some of this has to do with his mother's upbringing, it doesn't change the fact that he is, when all is said and done, an evil person.
Like Joffrey, the late Viserys is a stunning example of what a king should not be. Like Joffrey, Viserys is cruel to women, and his mistaken belief in his superiority over his sister is, ultimately, what leads to his downfall and his brutal death at the hands of Khal Drogo. In the universe constructed by "Game of Thrones," it is the men who are unceasingly and consistently cruel to women who come to signify evil, and Viserys is an excellent example of the price that those who indulge in such behaviors must ultimately pay.
We are never left in any doubt as to the basically evil nature of this foremost of the Warlocks of Qarth. Again, his actions toward Daenerys mark him as a character that is meant to be seen as evil, and we as viewers are again rewarded by getting to see him meet a particularly gruesome (yet satisfying) ending at the business end of the dragons that he had so cunningly kidnapped. It remains to be seen, however, whether the Warlocks will come to play a greater role in the series than they have as of yet.
Clearly, there is no shortage of evil within the fictional world created by "Game of Thrones." Though the series does enjoy playing with our sense of what is right and what is wrong, some characters do emerge that are easily and definitely identified as being evil and, as a result, we know in advance what their fate will be (even if, in Joffrey's case, it may be somewhat delayed).