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.

Most dragons don't smile at all and have other ways to show they're happy, but Harold smiles all the time, even when he's not happy at all. He likes bright lights and flashy patterns, so his territory is adorned with purple and yellow flowers. He occasionally plays announcer when the tri-horn wyverns and other fight-happy dragons put on a show, but usually, he's just walking around overseeing his land and making sure all the little dragons there behave. Some of them are very destructive, but Mr. Smiley can't do much except yell at them and ban them for life, all while smiling.