Superman: Unbound his drones attacking a planet. Though he attempts to stop them, Superman witnesses Brainiac capture the planet's capital like he did with Kandor before firing a Solar Aggressor missile to consume the planet in its exploding sun. The explosion knocks Superman unconscious and he is brought on board Brainiac’s skull shaped, tentacled ship. Coming to in the examination room, he fights his way through the vessel before he discovers a room full of bottled cities prior to being attacked by Brainiac. At this point, confirming that he spared Krypton because of its eventual destruction, Brainiac is shown that he has
Mongo (fictional planet) the air, which caused acid rain, killed wildlife, and contaminated Mongo's water. The planet became uninhabitable. A small portion of Mongo's people emigrated to Arkaylia. After three generations on the artificial moon, Mongo's environment partially repaired itself. As a result, the people returned to the planet. Clean water, known as "source water", still remained scarce and came from underground. Centuries later, Ming seized power and began his rule. The 1977 Fantasy Games Unlimited role-playing game "Flash Gordon & the Warriors of Mongo" used the planet Mongo as its setting. The game was designed by science fiction writer Lin Carter and