Neotropical Dragons are a breed that originate in rainforests. They are fun-loving and enjoy lounging on tree branches, eating whatever fruit they find. They are also often found sunning themselves on rocks, using their large wings to soak up the rays. In the summer, males compete for mates by showing off their striped wings and gliding in spirals down the tree trunks. It is said that the larger the wings, the more likely the male will attract a suitable mate.

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.

Banana-Breasted Wyvern is terrified of bright-breasted wyverns, believing them to be involved with—if not the source of—banana bacterial wilt. He is sure those good-for-nothing, poisonous little dragons are behind a plot to poison banana trees and lead to famine across the Madder Jungle. It is his self-assigned job, through passive-aggressive techniques, to protect the most vital of edible plants. For years, he has been wondering why the zyumorphs don't join in his noble quest, since everything he's read about them suggests saving stuff from evil is their shtick.

When Banana-Breasted Wyvern is asked why he chooses to go by the name he uses, he explains that "to beat them, you must join them." The other bananas are afraid this means he will start spreading the banana bacterial wilt and therefore become the threat he is most afraid of.