Number Sixwhen John meets her in I Am Number Four shes strong, powerful, and ready to fight. But who is she? Where has she been living? How has she been training? When did she develop her legacies? And how does she know so much about the Mogadorians? In I Am Number Four: The Lost Files: Sixs Legacy, discover the story behind Six. Before Paradise, Ohio, before John Smith, Six was traveling through West Texas with her Cpan, Katarina. What happened there would change Six forever.