One important character in John Steinbecks novel, East of Eden, is Cathy Ames. Cathy is an important character in this novel because she is pretty much the embodiment of evil. She has no remorse for other people at all, killing her parents and then going about using people. Cathy feels that there is nothing but evil and sin in the world and that she feels that she should embrace evil. Cathy is a symbol of the human evil and sin that will always exist in the world.