Publication history of Superman Superman titles have followed two major story arcs. "Action Comics" deals with Superman and wife Lois adopting a Kryptonian child who is revealed to be the child of General Zod. After resolving this arc, Superman has dealt with the return of one of his most dangerous villains, Brainiac which resulted in the arrival of thousands of Kryptonians on Earth and sadly the death of his adoptive father. In "New Krypton", the Kryptonians create a new planet, New Krypton, and raise it opposite Earth's place in the solar system. In "", Superman decides to leave Earth to live among the Kryptonians,
Mongo (fictional planet) "familiarly Asian". Mongo (fictional planet) Mongo is a fictional planet where the comic strip (and later movie serials) of "Flash Gordon" takes place. Mongo was created by the comics artist Alex Raymond in 1934, with the assistance of Raymond's ghostwriter Don Moore. Mongo is depicted as being ruled by a usurper named Ming the Merciless, who is shown as ruling Mongo in a harsh and oppressive manner. The planet is depicted as being inhabited by different cultures, and having a varying ecosystem. The technology of these cultures varies from groups at a Stone Age level, to highly technologically advanced peoples.