Registered Phenomena Code: 381

Object Class: Gamma-Red

Hazard Types:Additional Properties: h-aggression.png Aggression h-sentient.png Sentient h-biohazard.png Bio-Hazard h-sensory.png Sensory h-aquatic.png Aquatic

Depiction of RPC-381-M (Male instances of RPC-381)1.


Depiction of RPC-381-F (Female instances of RPC-381).

Containment Protocols: Captured specimens of RPC-381 are to be contained in Site-031-1 in a aquatic-based containment cell. The temperature of containment cells housing RPC-381 must be kept around 20°C, similar to the native temperatures of the Amazon rainforest. RPC-381 specimens are to be contained separately based on their biological sex.

Containment chambers are to be constructed of reinforced steel and ballistic-proof glass. The interior of the containment chamber is built underground and designed to resemble an underwater cave system. Hidden security cameras are to be set up inside the containment chamber.

Specimens of RPC-381 in containment may be fed beef and/or pork. Cleaning of the containment chamber is to be done via the sedation of all RPC-381 instances. All specimens will be transferred to an adjacent containment chamber while maintenance is in progress.

Units of MST X-Ray-8 (Lab Rats) in South America are assigned to capture and/or exterminate wild instances of RPC-381 found in underground caverns, particularly in the Amazon rainforest.

Personnel infected by male instances of RPC-381 (RPC-381-M) are to have RPC-381-M removed through surgery. Personnel infected by male instances of RPC-381 (RPC-381-M) are to be quarantined, with all newborn RPC-381 instances terminated before reaching adulthood.

Description: RPC-381 is the designation given to an anomalous species of aquatic, troglobitic humanoids found in the Amazon forest, particularly in anchialine caves found all over the Amazon. RPC-381 specimens are amphibians in nature with major physiological and behavioral differences depending on the sex of said RPC-381 specimens. While female instances of RPC-381 (Designated as RPC-381-F) are more predatory in nature, male instances of RPC-381 (Designated as RPC-381-M) exhibit parasitic behavior for the purpose of reproduction.

RPC-381 specimens shows genetic similarity to Lophiiformes2 and Homo Erectus by ██%. However, genetic resemblance to [DATA REDACTED] and [DATA REDACTED] has also been observed in all instances of RPC-381. RPC-381 specimens have whisker-like hairs on their body, particularly concentrated on the top of their head, and function as additional sensory input.

RPC-381 instances are cannibalistic towards same-sex instances. However, cases of cannibalism are more dominant in female instances. Research and observation show that RPC-381 instances typically do not interact with each other unless for the purpose of cannibalism or reproduction.

Discovery: The first instances of RPC-381 were originally encountered by a plane crash survivor named Timothy ██████. During his unlikely 26 days of survival in the Amazon Jungle, Timothy wrote in his journal about his encounters with RPC-381 instances, including sketches of both RPC-381-M and RPC-381-F.

Based on Timothy's published journal and testimony, an investigation was enacted by South American MST units. The initial encounter with RPC-381 resulted in the death of seven MST personnel. Investigation into RPC-381's existence by the mass media was prevented under the guise of protecting against deforestation. This allowed the RPC Authority to fend off other investigations and dramatically reduce the wild population of RPC-381 inside the Amazon.

A cover-up story has been used regarding RPC-381's existence. At the time of writing, the existence of RPC-381 is considered an urban legend by civilians. Timothy ██████ was detained by the Authority after being arrested for conspiracy to commit weapons trafficking.

Incident S031: On 17/05/2014, During an unrelated containment breach by RPC-███, damages were done to the containment cell of RPC-381 instances in Site-031-1. The damage to the containment cell was not noticed until several RPC-381-M instances breached containment a day after cleanup. The containment breach of RPC-381-M instances resulted in the infection of eighteen personnel.


A blister with an RPC-381 fetus inside.

While RPC-381-M instances were successfully removed from the bodies of attacked personnel, three victims died as a result of exotic tumor growths within their bodies. This is indicative that RPC-381-M insemination can be successful in hosts other than RPC-381-F.

Incident 381-1: Reports of wild instances of RPC-381 inside the sewage systems of Site-031-1 were made by the maintenance crew. Deployed MST Team X-Ray-8 was able to neutralize or capture all RPC-381 instances.

According to research into said RPC-381 specimens, these instances were formed as a result of birth deformity caused by cross-breeding with humans during Incident S031. Research shows that those RPC-381 specimens were the result of newborn RPC-381 instances escaping Site-031-1 during Incident S031. Genetic analysis indicates that those RPC-381 specimens genetically resemble humans by █% more than natural RPC-381 instances.

In addition, MST personnel discovered a large specimen of RPC-381-F which appeared to be partially fused to the ground. Said instance is designated as RPC-381-Q and is considered a neutralized threat. Prior to neutralization, RPC-381-Q appeared to take on a matriarchal role, with RPC-381-M instances constantly impregnating RPC-381-Q for the purpose of reproduction. Notably, instances of RPC-381-M appear to be unusually aggressive, especially when MST personnel approach RPC-381-Q.

It should be noted that RPC-381-Q does not appear to birth other female instances of RPC-381 during reproduction. The possibility that this phenomenon is the result of genetic damage as a result of human cross-breeding is unconfirmed.

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