Dragons are creatures with nearly unlimited life spans. They can survive for long periods of time, and no one has found a dragon that has died of old age. Adolescence 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. Once they hit adolescence, hatchlings change quickly, maturing to their full forms in only 2 years.

Dragons don’t communicate with each other verbally, but they will growl to scare off predators and frighten prey. Young dragons will emit an extremely high-pitched squeal when they are frightened. To communicate, they use telepathy with each other and to speak to other creatures.

Guardian dragons have large shields on the end of their tails. Although the shields appear to be heavy, they are light, yet nearly unbreakable. Guardian dragons use their tail-shields, as well as their wings, to deflect attacks and protect others. Often, they will guard the eggs and hatchlings of a nest while others are away. They are generally peaceful, and will not retaliate unless necessary. They have no need to forage or hunt, as they are fed by those they protect.

Cerule Scutum's name means 'Blue Shield'. She is a dear friend of Incedius Flame, the blind magi dragon, as they knew each other since they were hatchlings. Together, they are two of the oldest dragons in the clan.

Cerule Scutum is also on Incedius's side in the Widerstand, an organization dedicated to the terrible struggle against the Corrupt, the wicked dragons who lead the clan. She is kind, but often sad, knowing that they can never win their battle.

She is secretly in love with Palmaceae, but has not seen him since the vine dragon retreated into his cave.