The Genius (典災ジーニアス, Ten-wazawai?, also known as the "Gatherers") are Monsters in the Elder Tale universe that did not exist prior to the Catastrophe. They are the main antagonists of the Log Horizon TRPG, hoping to spread death and destruction around the world. In actuality, they are foreigners to the world of Theldesia, and are one of the two Traveler factions.

The monster bodies themselves were supposed to be implemented with the Homesteading the Noosphere expansion pack; however, eight hours before they were supposed to appear, the seal on the Fortress of Apocalypse from which they would come suddenly broke (perhaps because of the Travelers), letting the monsters loose into the world.


There are over 90 Genius in the world, but only some of them are active. However, those that are active caused the disappearance of almost all the Ancients and the Thirteen Global Chivalric Orders. Their abilities are above the scope of the world's laws, and they hold knowledge about the Adventurers' old world. The Geniuses' powers hold the secret to this world, and must be defended from by the Adventurers.

In fact, the Genius are a faction of the Traveler race, that was brought to this world during the Catastrophe, which they called the Eclipse, and their efforts are on bringing destruction and chaos. The Genius specialize in gathering Empathiom, and they tend to justify any means to achieve their aims. Additionally, their monster avatars’ destructive flavor texts are only exacerbating the situation.

Currently, all the Genius monsters seem to be named after demons.[1] Specifically, their name and powers are derived from the Nuctemeron.[2]

"Genius" seems to be a subclass, although perhaps restricted only to monsters. All of the known Genius have this subclass.  


Route 43 arc

Roe2 mentions the Genius monsters when talking to Minori during the invasion of Wyverns, saying that the Odysseia Knights' repeated suicides may be part of the monsters' plans, since it creates something called "Empathium."

Kanami, Go East! arc

In China, Kanami's Party hears reports that the Lelang Wolf Cavalry was wiped out by undying monsters. Upon hearing this, Kanami decides to go face down these monsters, with Elias Hackblade and Coppelia following her. Although Leonardo initially hesitates, he agrees to go after talking with K.R.. The party is successful in killing the two Genius monsters they face, although K.R. is killed and sent back to Yamato in the process.

While talking to Ga-tan, K.R. reveals that he joined Plant Hwyaden in order to gather more information about these monsters. From his research, the Genius were moving around the server and walking around, unseen and unknown. One is in Nakasu, while two are in Akihabara.

Homesteading the Noosphere arc 

Shiroe reads Roe2's letter, which was written while Touya's Party was in Sapphir. The preface explains that she is a Traveler, a race of mental bodies that were brought to the world of Theldesia because of the Catastrophe, which they called the Eclipse (its kanji reads "pact"), and continues to explain that her race has two factions: the Fools and the Genius. The kanji for Genius, reads "collectors," giving a hint into their true nature.

Known Genii

Name Hour Epithet
Heiglot First Genius of Snowstorms
Mizkun First Genius of Shadows
Rasphuia First Genius of Necromancy
Papus First Genius of Healing
Zahun First Genius of Scandals
Baglis Second Genius of Measures
Labezerin Second Genius of Probability
Sachluph Second Genius of Green Wings
Hahabi Third Genius of Fear
Mascarun Third Genius of Death
Sislau Fourth Genius of Pestilence
Camaysar Fifth Genius of Marriages
Eirenus Fifth Genius of Disappointment
Taliktan Fifth Genius of Summoning
Susabo Sixth Genius of Voyages
Causub Seventh Genius of Snakes
Jazer Seventh Genius that Compels Love
Nantur Eighth Genius of Writing
Colopatiron Ninth Genius that Opens Prisons
Bucaphi Tenth Genius of Witches
Marnes Twelfth Genius of Reincarnation


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