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.

Alessandro Crimson is loyal, honest, amiable, kind, cautious and prudent. Due to having a strong sense of loyalty and sincerity, Alessandro will do everything for the person who he thinks is most important. Alessandro isn't good at communication. It is difficult for him to convey his thoughts to others. Therefore, he tends to leave others with the impression that he has a stubborn personality. He can also easily worry to much when it is about his loved ones. Not many opponents can oppose Alessandro, being a Royal Crimson Dragon and a natural capable fighter himself, though he dislikes fighting he won't hesitate to kill if he is pushed to it. He likes play fighting and practicing his fighting techniques with his clan members when he has the time. Alessandro can mix physical strength with close-quarters combat, giving his attacks great force. He can focus his strength into a point of his body, allowing him to cause massive amount of damage, lift heavy objects, etc.