Briss Kingdom, also sometime referenced as "Briss Island", is the second largest island in the South Blue. It is north of Crescent Island, and south of Torino Kingdom.

Long ago, this kingdom was a rich and wealthy one, with many allies. However, due to poor leadership, a large portion of the island would slowly fall into poverty over the years. Now, Briss Kingdom is only a fraction of it's former self. The population dropped from over 20,000 down to a mere 2,400. The people today are very hostile, and seem to have a cult dedicated to a previously unknown god (most likely made up by the inhabitants.

Marines use the southern part of the island, having bought it from the people of the kingdom many years ago. Here, not only can they watch the Briss Kingdom, but also keep an eye on Crescent Island as well (not that there is much to see there.)

The island is quite a beautiful one, it's only the people who live there that stop tourists from coming. It is full of many beautiful forests and mountains in the centre, and many amazing and sandy beaches on the coast. It's climate is almost always sunny and warm, with occasional rain.

Wildlife includes the likes of bears, deer, along with moose.