Grave Dragons are not named for their connections to death or burial, but for the grave expression on their faces. This strange expression is used as a defense mechanism that causes fits of panic and terror in potential predators. Since they only eat ash and charcoal, they do not hunt. Grave Dragons are powerful fire-breathers and have been known to burn down forests and villages alike to make meals. It is believed that the markings on each Grave Dragon’s wings are the faces of those who have lost their lives in fires started by that dragon.

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.

Soul's job in the Cave is to light the torches and the fire pit in the Nursery at night and during storms. Actually, it's not just his job, it's his life. He lives solely to light the torches and the fire pit. Mostly because that's how he gets food, but also because he's a pyromaniac. Fire to him is beautiful. Burning objects is an art.

When he's not performing his duties, he's terrorizing the village that is located suspiciously close to the Cave, usually by burning things. Preferably, things with other living things inside them. It amuses Soul to see them run around, shrieking their heads off. And for some reason, it always seems like the pattern on his wings, tail, and legs gets more detailed each time he kills someone.

Many speculate that he received his sadism by watching Evan, the black-magic wielding Albino.