Ember Dragons have a great affinity for hot environments. While they themselves are not hot to the touch, their tendency to lurk amongst smoldering ashes has caused many to believe they are fire-starters. Their dully glowing markings serve many purposes: acting as a means of identification between individuals, as an important part of mating displays, and as a way of showing aggression. The long, low build of the breed makes them ungainly in flight, and the thick fleshy membranes of their wings hinder them further. As such, it is rare to see an Ember Dragon take to the air. Ember Dragons are also not particularly sociable; females tend to be defensive, whereas males are more aggressive. Once they have settled with a particular group of dragons, Ember Dragons are incredibly loyal and will defend their pack by any means possible.

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.

"Tuko is a mere legend and does not exist." This is what most of the dragons in the cave believed. However, on a cold autumn day, an ember egg was picked up. It looked like an ordinary ember egg... but Tuko hatched. He was the most beautiful thing a dragon have seen, and thus named Tuko, from a legend. That legend is as follows: When embers fall into the deepest of caves, an ember dragon would come and protect the dragons.

Tuko grew into adulthood. Unlike many other ember dragons, he did not exactly choose sides. He did promise to protect the frozen hatchlings and the Ungrown Ones (as he calls unfrozen hatchlings and eggs), and he did that exactly. He helped the white dragons cure disease. When a black dragon threatened to kill a hatchling, Tuko sent a death threat to that black dragon. He is, truly, a loyal ember dragon that is trusted.