This breed of dragon results from eggs or hatchlings that have been neglected. They are usually rebellious, not obeying their masters, sometimes even attacking them. However, their neglect as a hatchling leaves them crippled, and they are weak compared to other breeds, causing them to stay with their masters for protection.

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.

Vengeful Thaleron has carried an anger toward experimenters and his tinsel mother from the moment he hatched. He knows that his mother tossed him and his siblings out for being born terrae and that they were all adopted by a twisted experimenter. The experimenter took these sun-loving terrae and turned them not into 'rare and beautiful' dragons as she told his mother, but into perverse, genderless monsters who squint in bright sunlight and depend on humans to feed them. Disgusted, he refuses to communicate with humans, and sticks to other Neglected. He has little respect for anyone but Lady Dodger, the ND who taught him that he could survive by eating chickens rather than accepting handouts from humans.