The Elux Lucis are a nocturnal breed of dragon found in the far north and at the peaks of particularly tall mountain ranges. During the day, their deep indigo scales easily conceal them among the trees, but at night, their remarkable iridescence is revealed; even the faintest starlight reflects off of their bodies in a dazzling display of colors. In flight, they almost resemble living auroras soaring across the night sky. During the winter, flocks of Elux Lucis fly south to hatch and raise their young. This annual migration is well known for filling the night sky with a display of reflected moonlight and starlight so vibrant it seems as though the northern lights themselves have wandered south.

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.

Collogue likes eating utensils and is rather lacking in self-restraint. The humans in the Pena Mountain settlements know about the eccentric dragons in the area, including Collogue. At certain times of year, when Elux Lucis groups are on the move, people usually hide all their household implements, in case this one is among them. Too many times before, she has broken away from her family group to head into town, and she would munch on an unattended shovel, or stick her neck through a kitchen window and gulp down any loose tools within reach, or nick someone's inksticks to lick like candy. Collogue's utensil-eating is a nonissue for her family, since no one uses tools, and it only becomes a problem for them when some humans manage to find them at their Pena Mountain territory to complain about her.