Pink Dragons are primarily herbivores and only eat meat during the mating season, when mates will exchange kills. When it is not breeding season, pink dragons spend most of their time incubating eggs and caring for their clan’s young. Due to their feminine color, it was traditionally thought that pink dragons were a strictly female breed, but this is not true.

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.

Named after the daughter of Zeus and Leda, Helen also possesses the epithet "Ryuushinsei" or "Dragon Parental Star".

Like the woman in the Greek mythology who bears the same name like her, it is said that she is a beauty without equal among the Pink Dragons. This is the reason why she is desired by many male dragons. However, she rarely mates with them, giving her whole attention to the eggs and hatchlings.

It is said that dragons once fought against each other to determine who is worthy to become her husband. The battles were comparable to a war. Recognizing that she was the reason for that, Helen retreated to the cave and only leaves it to hunt for food or to bath.