Brute Dragons are among the larger dragon breeds. They prefer to live in solitude or small groups, nesting in high, mountainous regions. The only time they openly seek the company of others is during the mating season, when males will fight for the attention of females. The thunderous crash of Brute Dragons butting horns against each other in competition for mates can be heard nearly a mile away.

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.

Named after a fearsome dragon of legend, Endriago is a proud and powerful lone dragon. Once long ago, he'd traveled alongside Crimson Firedrake and his mate, Ambrosia Scales, with the three dragons forming a clan, in the loosest sense of the word. When Crimson Firedrake and Ambrosia Scales settled themselves into Shield Tail and Dark Drakon's dragon herd, becoming parents to two hatchlings soon afterward, Endriago was completely indifferent to the loss of his two traveling companions. Regardless of how little he was bothered by the parting, he still considers Crimson Firedrake and Ambrosia Scales his friends. When he is in the vicinity, he will make an effort to pay the pair a visit. Those visits do tend to be short lived, however, mostly because he has little patience for the ties that hold Shield Tail and Dark Drakon's herd together, and has even less tolerance for the herd's hatchlings. Endriago is adamant in his decision to never tie himself down to any dragon or any place.