This tactical dagger is a product of the 2189 "Eclipse Protocol," a black project by the Martian Colonial Authority to weaponize the remains of the "Void Weavers"—a species of arachnid-like aliens that crash-landed on Mars in 2176. The aliens' exoskeletons were composed of a lightweight, self-repairing biopolymer that could phase through solid matter, a property the MCA sought to exploit for covert operations.

The dagger's frame is forged from the exoskeleton of a Void Weaver queen, its honeycomb structure reducing weight by 60% while maintaining the strength of titanium. The blade, sharpened to a monomolecular edge, is laced with the aliens' bioluminescent venom, which causes the victim's nervous system to shut down within 10 seconds. The hollowed, web-like handle contains a micro-pump that injects the venom into the blade with each strike, ensuring a lethal dose with every cut.

However, the weapon carries a terrifying side effect. The Void Weavers' collective consciousness, stored in their biopolymer, is still active in the dagger's frame. Those who wield it for more than 48 hours begin to experience vivid hallucinations of the aliens' hive mind—visions of endless tunnels, clicking mandibles, and a primal hunger to consume organic matter. Worse, the biopolymer slowly absorbs the user's DNA, causing their skin to harden into a chitinous shell and their eyes to glow with the same bioluminescent light as the venom.

The MCA abandoned the Eclipse Protocol after three test subjects fully transformed into Void Weaver hybrids, escaping the facility and disappearing into the Martian desert. The remaining daggers were sealed in a vault, but one was stolen by a rogue scientist who believed the aliens were not a threat, but the next step in human evolution. Today, it circulates on the black market, where it is known as the "Hive-Bone Dagger"—a weapon that promises ultimate stealth, but at the cost of the user's humanity.