When Water Dragons mature, they lose the ability to survive on land, entering the water permanently. They are adept swimmers and eat whatever fish are in the lake they live in. They tend to inhabit the same lake for their entire lives, although a few live in the ocean and swim all over the world.

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.

Killian stream is always looking for adventure, yet is able enjoy himself when he faces quiet times. From letting himself fall from a waterfall to just swimming in a calm river towards the open sea, Killian is open to it all. Killian has a very adaptable personality making him liked by almost every dragon in the clan. He can be very shy, protective and quiet while he is with the more timid and caring kind of dragons but on the other hand extremely jolly, playful and active with the more sportive and social dragons. The only dragons he can't mix with are dragons who are too aggressive or harsh becoming rebellious against them. It seems Killian has two sides of himself. His personality is almost like a coin who either flips head or tails. Killian job is to stop invaders that try to get into the clan's territory who travel by boat or under water. He also protects and nurtures the coral reefs. Even though he likes peace he won't hesitate to kill in order to protect his clan.