Plated Colossus Dragons are one of the largest dragon species. These huge brutes are notorious bullies—they prefer to steal food from other dragons rather than finding it for themselves. As their thick hides are impervious to most forms of physical attack, Plated Colossi simply ignore the other dragons’ protests, or lash the offending dragon with their club-like tail, which can easily break a limb. Plated Colossi have slow metabolisms and do not need to eat often, but they may consume nearly half their body weight in one feeding. These dragons are not incredibly clever and any discussion with them will often center around eating.

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.

Boulder's entrance to the clan wasn't all too celebrated, since they had no need for such a gluttonous brute to be stealing their already limited supply of food. However, Lady Hookblood found use for him, and Boulder now lives somewhat happily as a sort of guard dog--with his impervious armor and clubbed tail making him a useful guardian, he is one of the most feared warriors of the clan, and is rewarded with all the food he can eat if he does well to protect the territory.