Littlefinger is at best neutral evil. He's not psychotic, but he's too often ignoring any legal matters to be lawful evil.
Tyrion is the definition of Chaotic Good, which is diametrically opposed to the rest of the Lannister family (at least the ones in ruling positions--Cersei, Tywin). He becomes about doing the right thing, even if it means being wrong in the eyes of family and society, and even before the whole shakeup of the royal wedding, he would be chaotic neutral. He's just too much of a hedonist to be anything but chaotic.
Cersei was already best summed up by seisorith: manipulating the law to server here own ends, be it whispering it to the son or acting as queen regent, even trying to manipulate the church.
Varys is a bit of an enigma. I think falls more under the "druidic*" true neutral of being outside the world and influencing it in ways that may be seen as good or evil, lawful or chaotic, but can never be truly nailed down one way or the other. He is about the flow and control of information, though, and according to the "Universal Law," it would probably put him more at chaotic neutral (Chaos Theory, laws of entropy, etc).
seisorith wrote:then there is Bronn, the guy who fought under Tyrion for a while.
Yeah, good example of true neutral in the shitstorm that is GoT. Self serving, but not without a heart for others. He's just trying to make way in the world. Will serve a lord as long as it doesn't infringe on his view of good and evil. Not much is said about his early history, but he says enough about it to know there were lines he wasn't willing to cross.
Another good example of Chaotic Evil would be any of the lords from Slaver's Bay.
*As defined in the AD&D second edition. It's about being impartial to the goings on, not necessarily not knowing, but seeing the random chaos for what it is.
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