6. Joffrey Baratheon
In the annals of television history, has their ever been a better demonstration of the "character you love to hate" concept? This sniveling, sociopathic inbred bastard had Ned killed, Sansa beaten, babies murdered, whores tortured and audiences booing. For TV's most vivid villain, crime paid – at least until those crimes caught up to him and he wound up poisoned at his own wedding feast. Perfectly portrayed by Jack Gleeson, who retired from acting after leaving the show, King Joffrey is no more. But his status as a great bad guy is forever.