@Taggerung:
Cyan thinks Tywin is evil but in the books he's unanimously praised as a great and strong leader in peace and war times.
He ordered the rape of at least two women, both out of petty spite.
Robb kicks Tywin's ass consistently on the battlefield and Robb basically takes over a good chunk of the Westerlands before Theon's shenanigans began and forced him to head north.
Tywin's campaign in the Riverlands borders on genocidal in scope and conduct. Also letting Gregor Clegane have his way with the countryside makes you a monster by default.
He doesn't care about his children, just what they can bring to his legacy.
The only reason he was viewed as a good Hand was because he got rid of legislation that gave the smallfolk some more legal rights. He doesn't seem to actually view smallfolk as human beings - this is a rather rare view in Westerosi nobility believe it or not.
He demands his children get into loveless but politically advantageous marriages as a way to boost his own prestige, while never remarrying himself.
That "twelve people at dinner" thing? It was more than twelve people - it was dozens at least, most of which were family to the top houses in the North and Riverlands. It also destroyed the foundation of diplomacy in Westeros and put a sociopath in charge of the North.
Also Renly would have been the best king hands down.
Renly was all style but no substance, Stannis is all substance but no people skills.
Robert had people skills, political skills, law enforcing skills, and raw charisma. He just never applied himself thanks to a number of reasons, big one being depression.
–- Update From New Post Merge ---
Loras for King of Sparkles and Joy