Which Lannister do you despise the least?
The American novelist and screenwriter, George R R. Martin, wrote "A Song of Fire and Ice" which is a series of fantasy novels.
Uh yeah. Yep. Geroge certainly has a crazy imagination to have written all those characters. 
I agree. he started the first volume of "A Game of Thrones" in 1991.
Gosh I wasn't even alive yet. And to think he's not even done with the series. But boy I sure do hate Cersei Lannister. I wonder what he has in store for her.
I'm not that familiar with the series but I do know that in the novels she serves as a point of view character.
Cersei is a very complex character. She's in love with her twin brother who fathered all three of her children. Her father was a very powerful man until he was murdered by her other brother Tyrion, who's a dwarf.
I understand the idea of Tyrion came to Martin while writing the novel, "Windhaven" and Tyrion has been called one of the author's finest creations.