A Doomsday for You

A portal suddenly appeared on Mars, and Donnie stepped through it, arriving directly at the Martian base. A city of steel was nearly complete. Though Mars had a harsh environment, it was nothing the Transformers could not overcome. Moreover, vast mineral deposits lay buried underground, a natural treasure trove ready for the taking. Optimus Prime held his Green Lantern Ring and silently examined it. "What, is the new Guardian of Sector 2814 dissatisfied with that ring?" Donnie's teasing voice suddenly rang out.