Elfen Lied Codexery

Vector Control Mechanism

Invisible arms of destruction controlled by the horns of the Diclonius.

The Vector Control Mechanism refers to the ability of an aircraft, rocket, or other vehicle to manipulate the direction of the thrust from its engine(s) or motor(s) to control the attitude or angular velocity of the vehicle. In rockets and ballistic missiles that fly outside the atmosphere, aerodynamic control surfaces are ineffective, so thrust vectoring is the primary means of attitude control. Exhaust vanes and gimbaled engines were used in the 1930s by Robert Goddard. For aircraft, the method was originally envisaged to provide upward vertical thrust as a means to give aircraft vertical (VTOL) or short (STOL) takeoff and landing ability. Subsequently, it was realized that using vectored thrust in combat situations enabled aircraft to perform various maneuvers not available to conventional-engined planes.

Range
Variable (Approximately 2 meters for mature users)

Lore & Background

Throughout history, this power has driven persecution against the Diclonius due to fears of their potential lethality. While often depicted as instruments of slaughter, the vectors are versatile tools capable of delicate manipulation, such as holding objects or shielding allies. However, the inability to hide these horns and the instinctive violence associated with their use have led to a cycle of isolation and conflict that defines the narrative of those who wield them.

In Their Own Story

The wind rustled through the abandoned facility as Lucy stood amidst the silence. She did not move her hands, yet the steel door before her groaned inward, crushed by an unseen force. A single vector extended from her shoulder, slicing a falling raindrop in perfect half before retracting into nothingness. There was no sound of movement, only the sudden spray of liquid and the cold realization that she could end everything with a mere thought.

Reader's Guide

The Diclonius ability functions through invisible, intangible arms called vectors that extend from their bodies. These limbs are controlled mentally via the horns atop their heads and can manipulate matter within a specific radius. While often used for brutal combat, such as slicing through steel or crushing skulls, they possess fine motor control allowing delicate tasks like holding objects without touching them. The range varies by individual, with some reaching up to twenty meters, though precision drops at maximum extension. To human observers, the vectors are completely unseen; only their effects manifest as sudden cuts or floating debris. Victims often realize they are under attack only after blood sprays from invisible wounds. This invisibility makes them terrifyingly unpredictable in battle. A key limitation is that users cannot typically use vectors against themselves, and physical barriers like thick concrete can sometimes block the force if not fully penetrated. Furthermore, maintaining concentration over a wide area causes significant mental fatigue, leaving the user vulnerable if their focus wavers during prolonged engagements or when facing multiple opponents simultaneously.

Did You Know?

Frequently Asked Questions

What exactly is the Vector Control Mechanism?

It is an innate biological ability exclusive to the Diclonius race that manifests as invisible, intangible arms called vectors. These extensions allow users to manipulate solid matter and exert force without any physical contact.

How does a Diclonius control their vectors?

Control is exerted through the pair of horns or antennae growing from the user's head, which act as the interface for directing movement. The arms respond instantly to the mental commands sent via these cranial appendages.

What are the primary capabilities and limitations of this power?

Vectors can slice through almost any material with extreme precision, serving as both a defensive tool and a devastating weapon. While invisible to the human eye, their effective range is typically limited to about 20 meters for fully mature users.

Why is this ability central to the story's tragedy?

The mechanism defines the Diclonius existence by making them natural predators who are simultaneously feared and hunted by humanity. This inherent power often isolates the users, leading to a cycle of violence and misunderstanding that drives the narrative.

Can vectors be seen or detected by normal humans?

No, these arms remain completely invisible and intangible to ordinary human senses unless their physical impact is observed. Humans can only perceive the results of vector manipulation, such as objects being crushed or severed.

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