Guardian Dragons have large shields on the end of their tails. Although the shields appear to be heavy, they are light, yet nearly unbreakable. Guardian Dragons use their tail-shields, as well as their wings, to deflect attacks and protect others. Often, they will guard the eggs and hatchlings of a nest while others are away. They are generally peaceful, and will not retaliate unless necessary. They have no need to forage or hunt, as they are fed by those they protect.

Dragons are highly-intelligent reptilian creatures that—from a human perspective, at least—appear to live forever. Many different varieties of dragon exist, each with their own unique qualities, habitats, and behavior. Adolescence in dragons is usually marked by the growth of a hatchling’s wings, although not all breeds of dragons grow wings and some breeds have other traits that indicate the beginning of maturation. In Galsreim, dragons and humans coexist peacefully.

Xio has an extreme motherly instinct that makes her ideal for watching over hatchlings and eggs where there are just too many for Maeyella and Murdoc to look after. Xio is a very large Guardian dragon with a tail shield inscribed with peculiar markings, almost like a Draconic language. Whether or not she is affiliated with a clan is unknown, and when she goes out, it is with many different dragons, not just Guardians. Xio prefers to hunt for chunks of silver to most other minerals, but she is also fond of any white rocks with 'veins' of color in them.