As presented in Justice League of America #9, when the Earth is infiltrated by alien warriors sent to conquer the planet, some of the world's greatest heroes join forces, Allen among them.
Seperti yang disajikan di Justice League of America #9, ketika Bumi disusupi oleh prajurit asing yang dikirim untuk menaklukkan planet ini, beberapa pahlawan terbesar dunia bergabung, Allen di antaranya.