Sweetlings are a small, flightless breed of dragon. They are omnivores who favor sweet fruits and honey, and have been known to go to great lengths to obtain their favorite treats. Their long, prehensile tails allow them to grab onto branches and give them superior balance. Sweetlings are expressive dragons and have a large array of calls to communicate with others. They become very vocal during breeding season and sing long, beautiful melodies to attract a mate. Inquisitive in nature, Sweetlings are known to investigate anything that piques their interest, and are quick to flee if the object of their curiosity strikes back.

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.

Quaver has a extremely beautiful singing voice and sings with a grace and elegance that surpasses others of his kind. However, he is unable to put his voice to much use, as his "older sister" Erophria Hearts is very protective of him and dislikes it when other females come near. He's managed to slip away in the past to have a few forays, but most of the time he's stuck following Erophria around. Quaver is too shy and soft-spoken to stand up to her, but being that her company isn't so bad, he doesn't try very hard to break away.