'Merfolk' is a broad term that covers all sentient aquatic life.
- Main Article : Merman
Mermen are a genetically engineered species made by GMaSG. They are bipedal and have the ability to breathe both in water and above water.
They notably have fins on the side of their head, and occasionally have horns.
- Main Article : Siren
Siren are an evolved form of Mermen that have a fish-like tail in place of their legs.
- Main Article : Unaga
Unaga are an evolved form of Siren. They have an elongated tail, making them functionally a waterborne Lamia.
Unlike their ancestors, they cannot breathe above water.
- Main Article : Ikicin
Ikicin are a descendant of mermen. Their hair is made of squid-like tentacles.
- Main Article : Takar
Takar are a descendant of mermen. Their hair is made of octopus-like tentacles.
- Main Article : Canas
Canas are the descendants of Mermen and Arachne. They are capable of breathing both above water and below water, and have powerful claws in place of human arms.