Magnesium Amphipteres are a rather violent species. They ruthlessly drive out anything that dares to trespass on their territory, and spend much of their time flying tirelessly in wide circles as they hunt and patrol their space. Often a single individual shows aggression between even its own two heads as they fight for food and control over their body. They are not social and will only come together to mate, after which the two dragons return to their own territory almost instantly. Magnesium Amphipteres are named for their flames: these dragons can breathe blindingly bright, powdery flame from both heads.

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.

Two-headed dragons are unique enough to deserve a separate classification from ordinary dragons. They have two necks, two brains, two mouths, but one stomach and one main body. The two heads usually work together, but there are times when they will fight each other, snapping back and forth. Their unique anatomy prevents them from breeding with single-headed dragons.

Nibuihai's diet is primarily prey caught during hunting, but she will also chew strong-smelling herbs as she believes doing so will make her fire breathing stronger. So far, the results haven't been particularly impressive, since Nibui's fire isn't visually any different. However, she has noticed that there's a distinct charred smell that results, which is reminiscent of cooking aromas. This isn't as intimidating as Nibui would have liked, but it does make it easier to lure prey from a distance, so she's continued with the herb chewing as part of her hunting strategies.