It is notable for having a mostly flat surface, save for a large plateau-like mountain in the center with a bowl-shaped valley in its center, filled with various types of vegetation.

In recent years, the Order of the Bounded Star and Anchor - the Knight Templar order - has moved its base of operations to this sky island, in a schism with the hierarchy of the Rephidim Temple, from its former base of operations at Golgotha.

Fetiss Sky Island is generally attributed as being discovered by the controversial explorer, Bassai of Nijushiho Institute, which prompted him to be granted an even more controversial boon by the Nagai Emperor-Potentate. It has later been revealed that a confrontation occurred between a Knight Templar of the Magenta Lance, Thorn, and Bassai, as the Knight Templar had placed a flag claiming the island for the Rephidim Temple. While the Templar's back was turned, a Nagai doctor accompanying Bassai, by the name of Fetiss, attacked the Templar, biting her neck through a gap in her armor. In the end, both Lancer and Naga died, and Bassai covered up the incident, reporting that they had both been killed by Babelite forces, and having the island named after the deceased Fetiss.