Overlord Wiki
Overlord Wiki
Spoiler Alert.PNG Spoiler Alert: WARNING! This page happens to contain a lot of heavy spoilers that are all originated from the Overlord Light Novel series written by the author Kugane Maruyama. To every Anime-only watchers and Manga-only reader out there viewing this warning, please mindfully consider your decision first before choosing to expose yourself on reading the information below. If you're not currently up-to-date with the main source material in the official books, do consider staying away from the page for non-spoiler sake until you actually read it first ahead of time.

Mermen (人魚) are an aquatic demi-human race that inhabits the oceans of the New World.


Mermen were a race that inhabited the seas located around the Roble Holy Kingdom. They had a long history of mutual cooperation with that nation. However, the memories of war with demi-humans still remain strong with the humans and elevate the sentiment that they could never truly accept them as allies.[1]


In the Mass for the Dead game, mermen are depicted being more like bipedal fish.


According to the Web Novel, Mermen were marine creatures.


In the Web Novel, the Mermen are also found in the Argland Council State.[2]



  1. Overlord Volume 12 Chapter 2: Seeking Salvation
  2. Overlord First Half Chapter 60: Settings
  3. Overlord Volume 12 Chapter 1: The Demon Emperor Jaldabaoth
  4. Mass for the Dead Special Event: Sage's Swimsuit