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.

Caesium is terrified of loneliness like no other. He's very romantic and somewhat naive, always getting little crushes on other elementals, writing letters to them, sending flowers and such, even if the pair would obviously never work out. Even Gold, the notoriously cold leader of the Periodic Clan, once fell for him, though a bit of emotional manipulation may or may not have been involved. Caesium is also dangerously unpredictable, as the smallest things can push him over the edge. He's very affectionate and easily moved to tears, creating the impression of a fragile little flower, but many have learnt the hard way that all hell breaks loose when he gets angry. Though he's usually a sweetie, living with Caesium and his sudden mood swings can prove to be quite a challenge.