Reg's Artificial Arm
An ancient relic from the Sixth Layer that predates Reg's bonds with friends.
Discovered in the Sixth Layer, Reg's Artificial Arm is the distinctive prosthetic left limb worn by the automaton boy deep within the Great Abyss. This artifact of ancient technology serves as a crucial extension of his body, swapping a lost organic part for unyielding mechanical strength well before he ever met Riko or Nanachi.
- Origin Layer
- Sixth Layer
Lore & Background
Far older than the bonds formed in the Abyss, this arm is a relic of a lost civilization found within the Sixth Layer. It was not crafted to symbolize friendship but rather represents Reg's mysterious origins as an automaton who existed prior to his companions' arrival. While Nanachi later performed maintenance on it, the limb itself stands as a testament to the advanced engineering of the ancients, defying the Curse with its resilience and power.
In Their Own Story
The cavern was silent save for the dripping water echoing off stone walls. Reg sat on a ledge, staring at his left hand. The metal gleamed faintly in the bioluminescent light of nearby fungi. He flexed the fingers, hearing the soft click of gears engaging. It felt heavier than flesh, yet it moved as if it were born from him. He remembered the smell of oil and the quiet voice that had promised to make him strong enough to protect others.
Reader's Guide
This prosthetic limb is exclusively designed for Reg and cannot be wielded by others. It functions as a direct extension of his nervous system, responding instantly to his combat instincts without the need for external commands or switches. The primary purpose of this artifact is to provide immense physical force, allowing the user to shatter stone and overpower Abyssal beasts that would crush normal explorers. While Reg's organic right arm remains vulnerable to injury, the artificial left is nearly indestructible against conventional damage. It does not suffer from the Curse of the Abyss in the same way biological tissue might, though the wearer must still endure the pressure of depth. Maintenance requires specialized knowledge found only within the deepest layers, making it a permanent fixture for its owner. To activate its full potential, Reg relies on his unique internal energy source rather than standard batteries. This integration allows him to fight continuously during ascents and descents where power supplies would typically fail. It serves as both a weapon and a testament to the resilience of those who survive the depths.
Did You Know?
- It was not crafted by Nanachi but is an artifact found in the Sixth Layer.
- The arm utilizes advanced technology from a lost civilization, not scrap from the Fifth Layer.
- Reg possessed this prosthetic before ever meeting Riko or Nanachi.
- Nanachi has been responsible for maintaining and repairing the device.
Frequently Asked Questions
What is Reg's Artificial Arm?
This artifact is an advanced prosthetic left arm crafted by the ancient civilization that once inhabited the First Layer of the Abyss. It serves as a permanent replacement for the organic limb lost by the automaton boy long before his journey with Riko began.
Who created and maintains this relic?
The specific creator remains unknown, though it is a product of the mysterious technology left behind in the deepest layers of the Great Abyss. Professor Ozen currently acts as its primary caretaker, performing necessary repairs to keep Reg's mechanical functions operational.
What powers does the arm grant Reg?
The limb provides immense physical strength far beyond human limits, allowing Reg to crush rocks and overpower powerful beasts with ease. It also houses a specialized weapon system capable of emitting high-speed projectiles for combat situations.
How was the arm discovered by Reg?
Reg found this ancient relic while wandering alone in the First Layer after losing his original body parts during a previous descent into the depths. He integrated the technology into himself to survive the harsh environment before eventually meeting his companions later on.
Why is this artifact significant to the story?
The arm symbolizes Reg's tragic past and his reliance on ancient machinery rather than organic life, highlighting the dangers of the Abyss. Its presence underscores the advanced capabilities of the lost civilization that built it, which remains a central mystery throughout the series.
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