Holiday dragons are a very mysterious breed. They are only seen during winter, and even then it is hard to catch a glimpse of one. They are responsible for the general cheer that spreads during the holidays. In essence, they are the “Spirits of Winter.”

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.

Katy is a kind, enthusiastic dragon that always tries to do her best. She's sociable with everyone, although she prefers to spend time with a certain group of close friends, such as the witty Iridella Frost Wendigo, rather than always trying to make new acquaintances. She particularly likes to spread the holiday spirit by singing carols and holiday-themed songs she invented, even though she's not very good at coming up with lyrics. Her favorite season is, of course, winter, and she's fascinated by winter Seasonal dragons, thing that led her to being a close friend to Beep Boop Beep Boop BAM, without judging her for her... unusual name.

When the holiday time ceases, Katy likes to move on to a well-hidden cave among a forest of fir trees, in which she lives during the rest of the year quite peacefully, and comes up with new songs for the next holidays.