Failed attempts to experiment with magic often result in transforming dragons into these hellish creatures. They are extremely dangerous, and will mindlessly kill any living creature without regard to friend or foe.

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.

"I grow weaker as my flesh continues to rot away. There are times when I feel no pain, only hunger. I can't tell if it's in my stomach or my mind. I've developed a strange craving for brains..." (Journal entry 327)

From a young age Gaulais had a obsession for the undead. By the time his full powers as a Magi had developed, he had completely shut out everything that didn't relate to his studies. His clanmates thought his hobby was morbid but harmless and usually left him alone. Until he started experimenting on them.

Dragons disappeared without warning, and several days later mangled bodies were found, smelling of chemicals and dark magic. When he ran out of test subjects, he experimented on himself. The foul combination of magic and alchemical potions slowly rotted both his body and mind, a horrifying process recorded in the detailed journal entries found in the ruins of his lab. But no one will ever know what he was looking for or if he ever found it. If he did he's likely forgotten.