Umbrella B.O.W Files: V-ACT "Crimson Head"

Classification

Bio-Organic Weapon Model: Crimson Head
Original Organism: Human
Purpose: Evolutionary

When a zombie infected with a certain strain of the t-Virus has been incapacitated for some time, a process occurs in which the t-Virus will begin to run rampant throughout its systems, initiating a system known as V-ACT, more commonly known as a Crimson Head due to the color of its skin when in this state.

Biology

When V-ACT occurs, the heart begins pumping at an alarming rate, causing noticeable blood seepage in the skin and giving it a crimson shade of red. The subject's fingers and toes develop sharp claws and an increased muscle mass and movement speed. The subject's level of aggression also increases greatly from that of the typical zombie. When zombies become Crimson Heads, virtually nothing will stop it from pursuing its prey, making these creatures extremely dangerous. 

The First Crimson Head: Crimson Head Prototype 1

According to Umbrella Research notes via V-ACT file, the first Crimson Head via Crimson Head Prototype 1 that was produced, was a prototype B.O.W. in a dormant state that was reconstructed by the t-Virus. When it finally became active, it killed many researchers during its observation. Umbrella Researchers were forced to have the creature put into a dormant state again (since disposing of this specimen was not an option), isolating and concealing it in the backyard cemetery of the Spencer Mansion.

Attack Patterns

A Crimson Head will "play dead" sometimes (much like their zombie predecessors) until their prey walks near it. It will then lunge quickly to stand. A Crimson Head attacks with force, running after its prey. It runs in a posture comparable to the Hunter α, though obviously unrelated - the posture is likely due to decomposition. It has been known to even kill fellow zombies and other creatures that get in the way between it and its prey. When it gets the chance, it will swipe with its large claws, causing heavy damage. It will sometimes even bite, causing minor injury. Crimson Heads can also withstand more damage from some
firearms than a normal zombie.

In Raccoon City
The V-ACT were seen during the Raccoon City Incident. Evidence supported in File: Operation Raccoon City.


V-ACT "Crimson Head" Notes

A zombie that has undergone a sudden mutation, bringing with it a ferociousness surpassing that of a standard zombie. The mutation process requires that the zombie first be incapacitated.

 At this time, the creature's body tissue is reconstructed at the cellular level resulting in renewed activity as well as the tell-tale reddish color that gives the Crimson Head its name. It possesses long, sharp claws and relentlessly pursues victims with a speed unseen in other zombies.






via Resident Evil Wiki