Foss (フォス) is one of the forty one Homunculus Maids that are responsible for the various maid jobs on the 9th and 10th Floors of the Great Tomb of Nazarick.


Like all the homunculus maid of Nazarick, Fourth wears a maid uniform.



Foss along with her fellow homunculus maids were created by Whitebrim, Herohero and Coup De Grâce.


The Ruler of Conspiracy Arc

Main article: The Ruler of Conspiracy Arc

Foss watched over Ainz all night without taking a rest. After her duty was done, she thanked Ainz for his generosity and told him that the next maid will take over from her.


Foss's abilities and class are generally at level one. Like all of the homunculus maids, they have a racial penalty called Increased Food Consumption, in which the maids need to eat a lot of food.

Her maid outfit is equal to a high-class item, bringing her some defensive stats.

Main Equipment


Ainz Ooal Gown

Like all the homunculus maids, Fourth is loyal to Ainz, and she will serve him well with her fullest effort.


Like all the homunculus maids, Fourth thinks of the Pleiades as a kind of idol group, with CZ2128 Delta being the most popular among them.


  • Foss used the Ring of Sustenance for her duty to watch over Ainz all night without eating or sleeping.


  • (To Ainz): "Yes. Then, your servant shall take her leave. After this, today’s maid will come to take over from me."
  • (To Ainz): "Please allow your servant to offer her deepest thanks for your generosity, Ainz-sama! However, it is thanks to this that your servant could stay by your side, to attend you without having to rest, Ainz-sama."