Dawnrunner (Dawnrunner #1)

A century ago a portal opened over Central America and the Tetza that came through changed our world. Now the world bends all its effort to making the Iron Kings-great mechs that must battle the Tetza for humanity's continued survival in gladiatorial combat. Anita Marr is the greatest of the pilots and is chosen to pilot a new prototype that could change the tide in humanity's favor. An all-ages sci-fi epic from rising stars Ram V and Evan Cagle.