Thunder Dragons are the masters of electricity. Their wings gather energy as they soar through the clouds, and when they clap their wings together they can create devastating arcs of lightning. They can stay airborne nearly indefinitely, landing only to sleep and breed; they catch their prey from the air and take moisture from the clouds. A thunder dragon’s roar is considered to be an omen of misfortune.

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.

In Baskina and Life-Song's new territories, the Kingdoms of the Keepers, three human siblings were born: Peiter, Posy, and Pluto. Along with their dragon companions, were destined to overthrow Baskina and each take rule in one of the three kingdoms. After the war, each of the three leaders renamed their lands in their dragons' honor.

Alypium, like his human, Peiter, is very kind and trusting. However, they lack the ability to see past one's guise and see them for who they really are. The kingdom of Alypium almost fell from King Peiter's grasp thanks to this trusting nature, hurting the neighboring lands of A'orth and Ashona because of their close relations.