Royal Crimson Dragons are so named due to their massive size and confident, regal bearing. Most of the time they are laid back, ignoring non-prey creatures smaller than themselves, although they will occasionally take fresh kills from other dragons as a reminder of their place in the social order. Although there are few other dragons large enough to pose a threat to Royal Crimsons, they have little tolerance for potential rivals and will fiercely defend their territory from such intruders.

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.

Riga sees herself as the rightful ruler of wherever she goes, and this has lead to many problems. The other female Royal Crimson in the castle is often subjected to her trying to assert her dominance, often with threats and coaxing on a fight. When this happens, any living thing nearby flees. The two crimson dragons make such an uproar in their duels that even the alpha Seragamma leaves them until they're finished, not risking his own hide to break up the fight. Riga has yet to come out on top in these battles, usually giving in and then sulking off. However, the other Royal Crimsons understand that it's just their breeds nature, and that it's just her blowing off steam, remaining on good terms with her even after the scuffles.