This is a list of all the antagonists and protagonists in The Power of Five series by Anthony Horowitz. The series chronicles the war between the Old Ones and the Five Gatekeepers. The Five are Matthew Freeman, Pedro/Inti, Scott and Jamie Tyler (Flint and Sapling) and Scarlett Adams (Scar, or Lin Mo, the Chinese goddess of the sea). The Old Ones ruled the world for eighty years at the dawn of humanity, but the Five defeated them, and threw them into Hell, causing the demons to await their return for millennia. Two gates were built in between Earth and Hell to keep the Old Ones out - these are the focus of the series and consist of Raven's Gate, and the Nazca Desert, which is the second gate.