This article is about the species. For a list of X-ians, see Category: X-ians.
X-ians are the dominant species of Planet X. They are three-foot-tall slender aqua-green beings. Their facial features are vaguely humanoid but their heads are larger and their eyes are an odd shade of lavender. They also have large, full well-shaped lips.
Most X-ians, save the Free People, are sticklers and strict followers of rules and regulations.