Flamingo Wyverns are so named for their resemblance to the tropical birds with whom they often share territory. Their most striking feature is the bony black crest over their faces and snouts, smaller in females, aiding both in digging up food and protection from attack. Females are noticeably brighter than males due to their habit of not straying far from particularly algae-rich feeding grounds.

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.

Rindlin was a gift given to Embrase by the Vera witch, Embrase's old friend. Vera witch named the egg and told Embrase that Rindlin will bring the Kriss tribe joy and happiness.

Rindlin can sometimes be dorky. She finds interest in little things that no one finds funny and laughs aloud at things such as clouds shaped like animals. However, she is always happy, and wishes for other's happiness.

She was once Petit-Geant's best female student, but as she grew, became a daydreamer that lost interest in combats and battles. Sometimes, she is not seen for days, and comes back from nowhere. No one knows where she has travelled to and come back from. Rindlin will growl softly in a jolly mood if asked, but say not much of her travels.

She seems to be interested in Aaron, who has the exact opposite personality as her. Aaron pretends to be disturbed by her company, but it seems that Aaron too is beginning to like Rindlin.

It seems that Rindlin has a natural capacity to make everyone happy.