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.

Named after the Hebrew word for "guardian, protector", Shamira has received the epithet "Ryuukansei", which is Japanese and means "Dragon Watching Stars".

Like said in her title, it is her duty to watch over the other dragons of her cave, especially the hatchling and eggs. Every night, she sits in front of the cave's entrance with her shield blocking the way so that no outsider could enter it without permission while everyone is asleep.

Although everyone does not mind to share their food with her, she rarely accepts the offer. It is said that she only need a small portion of water and food for a week.