User blog comment:Hyperborean/"The House of Hades" – official expectations blog/@comment-170.235.245.52-20130523162121/@comment-4649443-20130526235215

Actually, Dark, it said that his son would overthrow him, and Metis had two children...a son and a daughter. So he ate his first wife, Metis the Wisdom Titan(according to my Myth book, this symbolizes Wisdom entering Zeus) and then he got a headache, so he got his head chopped open, and only Athena came out, and she was loyal to Zeus, ending the parent/child cycle of taking over the throne.