Fae

According to Synthia in the beginning of fighting Destiny, the Fae are mysterious creatures who rarely announce anything to the humans. Even the guilds know little about the Fae and the lives they lived, which Synthia states makes most missions involving them a challenge in its own. The Fae Royalty outrank all otherworlders. And although there are few exceptions to this. They are known to be powerful immortals whose beauty is unmatched. Many of them taking jobs as movie stars and models as they never aged and timesless beauty froze around the age of thirty,

PErsonality
During the series we learn the fae like humans have a wide variety of personalitys although serveal sterotypes are known. They are believes to be merciless creatures who are highly seductive.

History
Prior to Fighting Destiny

Sometime prior to when Fighting Destiny takes place the Fae like the otherworlders were a species unknown to humans, Witches being the exclusion, They lived in the shadows until one day they decided to make their species known to the humans of Terra. After which time the Fae found themselves intertwined with the world of humans changing the course of mankind. Despite coming out to the world the fae are still known as Mysterious and Secret Creatures who choose to share little with the humans.