Mint colored dragons are the most peaceful of all dragons; they only eat plants unless they scavenge meat from an already dead animal. They also have no ways to attack others or defend themselves. They are much smaller than other forms of dragons since they only double in size when they mature. Mint dragons are unable to use magic and cannot fly since they lack wings. Their looks have given rise to the common insult of calling dragons “large lizards.”

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.

Guard of Sanity is part of the master of the caves "assassin party". This party is exclusive to fully grown dragons that are only about as large as their master. Guard of sanity was chosen for this party because of their masters "voices" and is there in those times of her fits. Sanity is skilled in trickery and tracking targets meant for assassination. But at any other time when she is not on these missions she is out sleeping under her favorite oak tree, specially planted by her master. When one thinks of Mint dragons, they are dragons that are very peaceful, Guard of Sanity is no exception to this rule, she does not care much for the party she is in, but who else will keep the other dragon in the party out of trouble. In that sense, she is also "reason".