Po-Siden (it's spelled right, by the way) was sent from the planet Olimpus in another dimension to Earth by Zus. They believe that one of their colonist ships crashed landed on Earth and those survivors had insomnia and reproduced (creating the people of Earth). Zus sends Po-Siden to see what happened to these survivors. Po-siden tries to claim the earth in the name of Olimpus, but he had to deal with Flash (Barry Allen) first.