Board Thread:Character Discussion/@comment-29195016-20160805003445/@comment-25536775-20160805014218

Baum initially went with the "East and West are wicked, North and South are good" mentality, but, when faced with writing a sequel that established the existence of Princess Ozma of Oz, he had to create Mombi, the Wicked Witch of the North, as a plot device, and then completely eschewed the "cardinal morality" system entirely.