That's right, Merfolk are in the BZPRPG. If you wish to create one, the info on them is below.

Physical characteristics

Merfolk have their gills near their necks, which only work when they are in water. On land they can breathe with their lungs like Toa do. However, their gills cannot breathe in air, like a normal fish cannot breathe in air through their gills. Merfolk also all have fin shaped bones extending behind their forearms (Think like Kiina’s arm armor,) that they use to help them swim.

Abilities

Merfolk have decreased strength on land, equaling the strength of a Matoran when on land. But in the sea, Merfolk have the advantage of brute strength, their strength doubling a normal Toa’s strength, making them stronger than a Skakdi. They can breath underwater, and cannot use Masks.

Variations

Cave Fish Merfolk

Cave Fish Merfolk, along with the normal abilities granted to a Merfolk, have the ability to inhale water to make themselves appear larger.

Makuta Fish Merfolk

Makuta Fish Merfolk, along with the normal abilities granted to a Merfolk, have extremely sharp teeth, strong enough to break through stone.

Lightfish Merfolk

Lightfish Merfolk, along with the normal abilities granted to a Merfolk, posses excellent vision in all environments including the brightest light and near-total darkness, and give off luminescence when in dark areas.

Proto Drake Merfolk

Proto Drake Merfolk, along with the normal abilities granted to a Merfolk, are able to achieve limited flight with their fins, and can withstand extreme heat.

Razor Whale Merfolk

Razor Whale Merfolk, along with the normal abilities granted to a Merfolk, have a row of sharp spikes down their backs, and are larger than the normal Merfolk.

Tarakava Merfolk

Tarakava Merfolk, along with the normal abilities granted to a Merfolk, have larger arms than most species, with a boxing glove like apparatus at the end.

Culture

Little is known about Merfolk culture, except that the legends state that they believe that they should rule over all species in the sea. Merfolk all come from the underwater city of Seaquastria.

Note

All Merfolk profiles must have fire in their weakness category, seeing as they do not interact well with fire.