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.

Porreni is an easygoing, gentle soul. Of all the dragons in his Flight, he is perhaps the most patient with its newly grown adolescents, whose awkward and often rude attempts to join adult dragon society simply make him smile. He enjoys making bad jokes, and is good friends with Dyadia, who, in his words, "is two good heads for the price of one."