Magi Dragons are, as their name suggests, primarily magic users. They rarely use physical forms of attack. They eat anything they can kill, which is almost everything. They won’t kill unprovoked except when hunting, although they may kill humans if in danger. Their strong magic makes them one of the most feared breeds of dragons.

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.

Leouric, known as Leo, is the complete opposite of his father Pollux. His father is rather asocial, cold, and dark-minded, while Leo could be described as a happy Magi dragon. On the other side, Leo is very smart and is slightly paranoid because he thinks that his father is planning something. Leo is always on the lookout whenever he's near Pollux. He often gets in fights with his mother, who idolizes Pollux and says Leouric is a paranoid idiot.