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Abelion Hills (アベリオン丘陵) is an area of wilderness with vast hills that lies between the Slane Theocracy and the Roble Holy Kingdom. It is inhabited by all kinds of demi-humans who are constantly trying to invade the Holy Kingdom. Jaldabaoth conquered the region and ruled over it until the Sorcerer Kingdom laid claim to the territory.


There were all kinds of demi-humans in the hill region, yet they did not have good relationships with each other. Rather, they often fought over territory, and apart from cases where Ogres took Goblins as slaves and cruelly used them, these races very rarely worked with each other.

The constant warfare and dangers these demi-human races produce is so troubling that the Roble Holy Kingdom constructed the largest and longest wall barrier on the continent to keep them out. The Slane Theocracy have made ​​numerous attempts to subjugate and cleanse the area, but so far its efforts have only managed to temporarily thin the demi-human population.

In the past, the Adventurer's Guild of the Re-Estize Kingdom had sent people there, but none have ever returned in one piece. As a result, the area is completely unknown terrain to the kingdom's citizens.

One of the most influential demi-humans to come from this land is Buser, also known as the King of the Demi-humans. Buser was a Bafolk famed for his strength as he managed to unite all of the Bafolk tribes under him as well as conquering many other demi-human tribes in the region.


The Ruler of Conspiracy Arc[]

Main article: The Ruler of Conspiracy Arc

As part of Ainz's persuasion to get Pluton Ainzach to trust him in turning the Adventurer's Guild from a mercenary group to real adventurers to explore the unknown and new lands. Ainz used the Aberion Hills as an example of what sort of potential exploring new lands would mean to the adventurers.

Ainz also spoke of providing support and assistance to all guild members if they would agree with his new reforms and is also seeking to use their help with finding more detailed information of the people that live there and what opportunities the land itself could provide.

Furthermore, Ainz mentioned that the Sorcerer Kingdom is making preparations for any potential future conquest, however only once that available information is procured and assured that he will not involve the Guild in their subjugation.[1]

The Paladin of the Holy Kingdom Arc[]

Main article: The Paladin of the Holy Kingdom I and The Paladin of the Holy Kingdom II Arc

At some unknown point in time, Demiurge, under his Jaldabaoth guise, conquered and enslaved about eighteen different demi-human races from the Abelion Hills in his conquest of the Holy Kingdom. He then forced all those who were combat-ready into a huge allied army and attacked one of the fortresses at the Holy Kingdom's Great Wall. After Jaldabaoth single-handedly destroyed the fortress along with a section of the wall, he ordered his army to finish off any surviving soldiers. Once that was done, the demi-human army marched through the opening in the wall into the Holy Kingdom.[2]

After Jaldabaoth invaded the Holy Kingdom and conquered the North, he left one of his trusted demon subordinates and servitude of demi-humans under them to manage the territory while its other brethren attacked cities like Loyts.[3]

When Ainz Ooal Gown supposedly was killed by Jaldabaoth,[4] it was believed that he has fallen into the Abelion Hills.[5] Fortunately, he miraculously survived the first deathmatch with Jaldabaoth, reappearing with his own demi-human army. He fought in his second and final standoff with the said Demon Emperor as the latter was about to destroy the Holy Kingdom Liberation Army. He said that he merely fell into the Abelion Hills region, where he has recuperated, and rallied the local demi-humans before coming back to overthrew the reigning demon. Whereafter he claimed the region for the Sorcerer Kingdom.[6]


The area consists mostly of a patch of wilderness that consists of mostly hills and wild forests. Though to the north is a region covered by thousands of sinkholes.[7] Its borders make up of mountain ranges in the south, east which neighbors the Slane Theocracy and the north by the Re-Estize Kingdom and by the Great Wall of the Roble Holy Kingdom in the west.

Known Inhabitants[]

The Abelion Hills is home to various demi-human tribes that consists of numerous races. The known ones so far that invaded the Holy Kingdom with Jaldabaoth are the eighteen different species such as Snakeman, Armat, Zern, Blader, Centaur, Caben, Horuner, Spidan, Stone Eater, Pteropus, Orthrous, Magelos, Bafolk. There are six other races that are not numerous, but very powerful such as Spriggan, Naga Raja, Vah Un, Ogre, Puri Un, and Zoastia. Additionally, there would be other species living the Abelion Hills such as Srush, Giant Biclop, Weremen, Pandex, Orc, Hill Giant, Goblin, and Dark Dwarves. Among the demi-human tribes were individuals that are noted to be skilled and fearsome warriors.


  • Metal appears to be scarce in the area and is a commodity that the local tribes quarrel over. Dark Dwarves in this area traded metal-made goods in exchange for slaves.[8]
  • There had even been cases where some of the demi-human tribes had been driven out of their land and forced to attack the Holy Kingdom.
  • In addition to Demi-Humans, some Heteromorphs have also made this place their homes like the Zern and the Pandex.
  • In Mass for the Dead, the Abelion Hills makes its appearance when Nazarick turns its attention to the Chaos Beast infestation in the Roble Holy Kingdom.[9]
  • According to the Web Novel, in the past, this area was once home to a kingdom of hill dwarfs, but it was later destroyed by demi-humans. After that, it became a lawless area where a myriad of demi-human tribes fight day and night for control.[10]


  1. Overlord Volume 10 Chapter 1: Sorcerer Kingdom of Ainz Ooal Gown
  2. Overlord Volume 12 Chapter 1: The Demon Emperor Jaldabaoth
  3. Overlord Volume 13 Chapter 4: The Siege
  4. Overlord Volume 13 Chapter 5: Ainz Dies
  5. Overlord Volume 13 Chapter 6: Gunner and Archer
  6. Overlord Volume 13 Chapter 7: Savior of the Nation
  7. Overlord Volume 13 Character Sheet 57: Beebeezee
  8. Overlord First Half Chapter 77: Gaiden: Come Everyone to Demiurge’s Ranch
  9. Mass for the Dead Special Event: Nazarick Revitalization Plan -Holy War-
  10. Overlord First Half Chapter 60: Settings


Re-Estize Kingdom
Re-Estize Ro-Lente Castle Magician's Guild Re-Blumrushur Re-Robel E-Naüru Re-Uroval E-Pespel
Baharuth Empire
Arwintar Grand Arena Imperial Castrum Ministry of Magic
Roble Holy Kingdom
Hoburns Kalinsha Loyts Prart Rimun Debone Great Wall Holy Kingdom Liberation Army Base
Sorcerer Kingdom
Great Tomb of Nazarick Log Cabin E-Rantel Katze Plains Carne Village Monument of Ruin Great Forest of Tob Abelion Hills Great Lake Underground Tomb
Elf Country
Crescent Lake Great Forest of Evasha
Dwarf Kingdom
Feo Jera Feo Berkana Feo Teiwaz Maze of Death Great Rift Feo Jera's Garrison
Other Locations
Eryuentiu Azerlisia Mountains Sea City Sasasharu Ruins Silent City Bown Swamp Rhynd Sea Sewage Treatment Plant Vadis Free City Quarry Tide Pool