Coastal Waverunners spend most of their time skimming the waves along the coast, snatching up their prey from the shallow waters. They have developed markings along the leading edges of their body that help disguise them as breaking waves. When they are not hunting, they enjoy playing among sand-dunes and shallow tide-pools. These dragons live in small but noisy rookeries. Some stories say Waverunners can fly for days on end without landing.

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.

Sir Theodore Roosevelt II chose his title because he felt that it was "rather brave sounding", and indeed, between his title and his name, one would expect Theo (as he is known to those of The Group) to be a brave, butt-kicking fighter dragon. This is not true by any stretch of the imagination. Theo is extremely timid and shy, and chose his title to make himself feel a bit more courageous. Apart from that, Theo is very playful, like most dragons of his breed, and will open up as one gets to to know him. His favorite pastimes include playing with the hatchlings on the beach and counting the clouds by type.

A little known fact about Sir Theodore Roosevelt II is that he is fascinated by arthropods, commonly known as bugs, and will go to great lengths to keep the other dragons from killing any.