Board Thread:TV Show Discussion/@comment-1031724-20160522234612/@comment-1031724-20170726043807

Changing my list to the most prominent villains each season:

Season 1 - Cersei and Jaime, Joffrey near the end

Season 2 - Joffrey, Tywin, Mance Rayder, Melisandre, Theon Greyjoy, Balon Greyjoy (as the Bigger Bad who he does all that stuff for)

Season 3 - Joffrey, Tywin, Mance Rayder, Melisandre, Ramsay Bolton

Season 4 - Tywin, Mance Rayder, Melisandre

Season 5 - The High Sparrow, Roose Bolton, Ramsay Bolton, Melisandre, the Night King, the Slave Masters

Season 6 - The High Sparrow, Ramsay Bolton, the Night King, the Slave Masters

Season 7 - Cersei, the Night King (possibly Euron, but he may be a slightly lesser antagonist)

But, you do have a point, the Night King is the most dangerous villain and has some presence throughout