One day Zeus got a bad migrane, so he went to his son Hermes and ask him what was wrong. He didn't know. The migrane lasted a few more days before something happened. Zeus thought that maybe it was all the stress Hera had given him. He thought maybe if he took a nap he would feel better. But he did not so he went to Hephaestus and asked him to slice his head open. Zeus' migrane got really bad and out popped his new child Athena. Since he was a God it healed right away. It turns out that when Hermes had put Io's baby in him it continued to grow. She had been born of his thoughts. She also had been born in full height and full battle armor. Zeus loved her very much. His Roman name is Jupiter.