One-Punch Man Wiki

"Dark Undergrounders" (闇の地底人, Yami no Chisokojin, Tonari: 4) is the fourth chapter of the One-Punch Man manga series.


Saitama is asleep in his apartment, but wakes up suddenly when his wall explodes and a hand reaches in and grabs his head. Saitama punches the arm of whoever grabbed him and the hand lets go, but he is then punched in the face, sending him crashing through a wall and down to the street below. When Saitama lands, his forehead is bleeding, but he has hardly any time before a creature pops out of the ground behind him and swings at him, sending him flying even though he attempted to defend, and when he gets up, he sees more of the creatures coming out of the ground. These creatures reveal themselves to be the Subterranean People and intend to take over the world, they surround Saitama and begin to attack him.

Saitama takes one out, but is quickly attacked by another. Saitama then rushes into the group of enemies, fighting madly until all of the Subterranean People are dead at his feet. As Saitama is standing there on the corpses, he hears a voice behind him and turns to see the Subterranean King bursting through the ground and is about to fight him when he hears his alarm clock go off and wakes from his dream. Sitting there stunned and disappointed he hears the Subterranean King yelling outside, so he goes and kicks him in the face, killing him in one hit. He declares that he will protect the surface and is about to fight the Subterranean People, but finds that they have already retreated back underground, leaving a white flag with the words "We're Sorry" on it. Saitama is left severely disappointed.

Characters in Order of Appearance[]

  1. Saitama
  2. Subterranean People (debuts)
  3. Subterranean King (debut and death)

Chapter Notes[]

Online Cover


Volume 1 12345678Extra
Volume 2
Volume 3 1617181920ExtraSpecial
Volume 4
Volume 5 2526272829Extra
Volume 6
Volume 7 353637Extra 1Extra 2Extra 3
Volume 8
Volume 9 41424344454647Extra
Volume 10
Volume 11 565758596061Extra 1Extra 2
Volume 12
Volume 13 68697071Special
Volume 14
Volume 15 7677787980Extra 1Extra 2Extra 3
Volume 16
Volume 17 858687Extra
Volume 18
Volume 19 91929394Extra
Volume 20
Volume 21 979899100101Extra
Volume 22
Volume 23 107108109110111112Extra
Volume 24
Online 119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164
Saitama Introduction Arc
Manga Chapters 1234
Manga Volumes
Webcomic Chapters 1 • 2 • 3 • 4
Fights Saitama vs. Vaccine ManSaitama vs. MarugoriSaitama vs. Super Custom YO649Z Mk. IISaitama vs. Subterranean King