Daydream Dragons are the hosts of daydreams and fantasies. They spend the majority of their time sitting on clouds, dropping daydreams down into the minds of people passing by. Humans who live near Daydream Dragons must be especially careful not to let their thoughts wander, or they could end up spending hours or even days in a trance-like waking dream state.

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.

When she was a hatchling, Doll lived in a human city as the favourite pet of a wealthy merchant's daughter. While most dragons would despise a life between four walls, she loved her keeper and the constant attention that life among humans brought her. Whenever the little girl was upset, Doll was there to comfort her, and the two seemed inseparable. However, this dream wasn't meant to last forever. As the hatchling grew bigger than the family could handle, they decided to set her free, believing that it was for her own good.

Dejected and feeling betrayed, Doll now wanders the outskirts of the city, planning revenge on the girl who pretended to be her friend and then threw her away. One can distinguish her from an ordinary Daydream by one thing, except for her ragged appearance and dulled colours; her cloud, previously pink, has now turned black like the ones before a storm.