The mer-people or merfolk are a race of half-human, half-fish people that live in the waters off the coast of Serenia and Kolyma. They are ruled over by King Neptune.
The mer-people have a large city off the coast of Kolyma. They are engaged in a war with the Sharkees. They were also in possession of the Birth Gem of Water until Neptune gave it to King Graham.
Mer-people appear in two King's Quest games -- King's Quest II: Romancing the Throne and King's Quest V: Absence Makes the Heart Go Yonder. They also appear in the AGDI fan-remake King's Quest II: Romancing the Stones.