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.

Since Hairrimue is a Brute Dragon, he was appointed Toxic's personal bodyguard when he was of age. As a hatchling, he was a wonder within the cave, being much larger than regular young dragons, and far more aggressive. To the blood-thirsty Vampires, this was a gift. A non-turned dragon that would actually be useful to them. The Vampire Clan nurtured the Brute Dragon. Well, they didn't really nurture him. They made him kill other hatchlings and sometimes even had him drink their blood, just to make sure he would be a fearless and brutal guardian.

Thanks to his Vampire "friends", Harrimue is exactly what they dreamed of him to be. He is much bigger than any other dragon in the cave, and he isn't a big nice custodian. In fact, if any dragon, stranger or not, steps foot within Toxic's room Harrimue has permission to dispatch them by any means necessary, sometimes even fatally wounding his target.

He has an unwavering loyalty to Toxic, and will protect the Vampire leader at any costs.