Aether Wyverns have the ability to control winds utilising air mana. During mating season, rival males often attempt to impress females by hanging onto a rock beside the female and letting another Aether Wyvern blast gale-force winds at them. The one to stay on the rock the longest wins, and if the female wins, she will reject both males. These wyverns also use their ability to control winds to blow away intruding dragons or to capture prey, though an Aether Wyvern’s aim is not perfect. As a solution to their imperfect aim, these wyverns will create large winds that often blow away much more than they originally intended to.

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.

Postbag is one of the mail carriers at Pena, with a route that looks like a bolt's horn with part of the longest bit missing. He is nicknamed after his unique bag, which is two halves of two different-sized and different-material bags stitched together with his footprint on one side, which he favors over the standard, job-issued sack. It took a lot of begging to allow him to break the rules to use his shonky bag, but that's not the biggest concern about Postbag. He isn't really good at his job: he's thin-skinned, he's prone to going off-route to deliver to friends and family first, and he steals envelopes and ink from the office. But he's also one of the few mail carriers willing to traverse some of the most dangerous areas of Pena as part of his route, including Brickdrop Forest, the Desipit, Hell Plateau, and Sunshine Sugar Valley.