Pillow Dragons are covered in enormous amounts of fur affectionately referred to as fluff. Despite their deceivingly large size, they can still fly even with such tiny wings because their bodies are remarkably light. Pillow Dragons have a habit of sleeping for up to eighteen hours a day, waking only in short bursts. During their few waking hours, they take the time to hunt for prey. Once a pillow dragon becomes an adult, its fur grows very slowly. Pillow dragon fur is used to make very expensive and valuable cloth known as “dragon cashmere.”

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.

Princess Prowl is the only child of King Linen and Queen Doomer that is not a Golden Wyvern. She is their first Pillow, and as such her father, who is also a Pillow Dragon, has taken quite a liking to her. He seems to favor her out of all his children, mostly because she's far less antisocial and greedy than her siblings.

Prowl is essentially the "best" of the royal family's offspring. She is outgoing and friendly, but polite and respectful to the other dragons of the cave. Linen has encouraged this behavior immensely, and attempts to keep Prowl out of the corrupted grasp of her mother and kin.

Unlike most Pillow Dragons, Prowl is quite active. She enjoys the thrill of the hunt and can often be found outside the cave, practicing her hunting technique or even teaching hatchlings how to properly stalk. However, the Princess will not refuse a quick nap with her father, and will take time off her hunting duties to spend an afternoon with him.