Geminae Dragons are known to be among the most powerful psychics of dragonkind. This power is used primarily to communicate with other creatures, but also as a defense mechanism. Though large, Geminae are not particularly well-suited for physical combat and thus rely on their psychic abilities to influence the thoughts, intentions, and emotions of anything that seeks to harm them. These dragons have no interest in fighting, either; they spend most of their time solving complex puzzles as a challenge for both heads to achieve together. Though both heads of the Geminae approach problems much differently, they are unparalleled in their desire to collaborate and compromise to reach a solution. When a Geminae puts its heads together, there is almost nothing it cannot do.

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.

Gosh is easily excitable and Droid always talks in emotionless monotone. Both love numbers: Droid is fascinated by long strings of digits and calculations while Gosh loves extremely high, low, and 'special' numbers such as squares or forty-two that pop up coincidentally. Their skills have earned them the position of "business manager" for the Guardian of Nature's Call. They keep records of outhouse outputs, cesspit status, toiletry tools, and other necessary knowledge. Droid makes certain that supplies are appropriately distributed, while Gosh focuses on averting disasters like offensive odours. Each head refers to her bodymate as her "number two buddy".