Snailliens are miniscule invasive creatures that live across galaxies, travelling in tiny improvised spacecrafts. They originated from a planet that is known as Gastropodis, a shell-shaped planet that lies in a tiny solar system. They can be found on practically every planet that has a solid place to land, from easily inhabitable worlds like Earth to deathly cold planets around galaxies.

Their evolution is wildly fast to make up for their many environments, though they all still remain part of one species. There are land Snailliens, aquatic Snailliens, and even anthro animal Snailliens!

They tend to live in homes of other species if they exist on whatever planet the Snailliens land on, but many snales choose to live in the wild. It's rare to see wild Snailliens alone, as they often form groups of varying sizes to protect each other from the dangers found on most planets.