Neptune was settled by humans from Earth in the 23rd century. At first, the Neptunians relied on special pressurized habitats to survive in the gaseous atmosphere. Over the following generations, the descendants of these colonists gradually adapted to the atmosphere until they had gained limited control of their bodies. These people are able to become as flat as a sheet of paper to lessen the effect of the dense atmosphere.
In the 30th century, because of its' heavy atmosphere, there are very few visitors to Neptune. Those who do come to this planet are forced to remain in special pressurized habitats or risk being crushed to death. If a member of an oxygen-breathing race remains unprotected on Neptune's surface, he will begin to die.
- Neptune first appeared in Mystery In Space # 1 (May 1951).
- ↑ As seen in Too Hot to Handle.
- ↑ As seen in the Atlas of the DC Universe.
- ↑ For more information about that DC comic book, click here.