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.

While it is true that the tail-shield on a Guardian dragon is nearly unbreakable, Itami is one of the unfortunate "nearlys." Her tail-shield was cracked as a child, and although it could still protect, she tries to avoid it so it does not break. She uses her wings on occasion, but Naro usually takes care of all the protecting and shares his food with Itami. She always feels guilty and helpless, but is well loved in the cave and told not to worry about it.