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Item #: RPC-XXXX

Object Class: Euclid Neutralized Euclid

Special Containment Procedures: RPC-XXXX is to be kept in a steel containment cell with one plexiglass porthole for monitoring by staff to ensure presence inside the cell, as all recording devices have been consumed. The inside of the cell is to be completely filled with water to ensure the survival of RPC-XXXX. No personnel are to enter unless a test is being conducted or maintenance is being done. In the event of a breach, recovery teams are to be equipped with portable steel containment cubes. RPC-XXXX is never to be fed anything, as all food provided has remained untouched.

Description: RCP-XXXX is a single specimen of a one-meter long orthacanthus1 with peculiarities for an organism of that type, namely a head-to-fin covering of bony plates, an absence of fins, a segmented body not unlike early trilobites, three rows of six-centimeter long teeth, and an immunity to modern weapons and is indigestible. RPC-XXXX is capable of excreting a highly toxic and flammable mucus, with no remedy. RPC-XXXX is also capable of mimicking any item or organism it digests, and will also assume the properties of it, but will return to its typical form faster if the prey item is smaller. While RPC-XXXX is transfigured, it will still remain impervious to physical trauma, but will act as the prey item would as if it were the original item or organism, including behavior, vocalizations, weight, and malleability (if an object is the form being taken). RPC-XXXX has displayed beyond human-level intelligence and will take any opportunity it receives to breach containment, typically going towards the largest body of water within a five kilometer radius. If no surface water is present, RPC-XXXX will disappear from view and reappear in the ██████ Ocean through anomalous means. RPC-XXXX is capable of speech, but is limited to Latin and [REDACTED]. RPC-XXXX has proven to be untrustworthy and manipulative, however is apparently ashamed after it has told a lie and been believed. RPC-XXXX has been described as sociable and somewhat friendly during encounters outside of containment. When observed discretely, RPC-XXXX has been noted to have a habit of curling up and biting its tail in apparent dismay with itself.

History: RPC-XXXX was made aware of to the foundation in 19██ when the Global Occult Coalition turned it over to the Foundation after repeated attempts at destroying SCP-XXXX. How the GOC acquired RPC-XXXX is still unknown. Before the current feeding routine had been decided upon, personnel would drop an item into the tank as they walked by. When junior researcher [REDACTED] noticed the peculiar reaction of RPC-XXXX after eating an object, and realized that it had not been fed for several days, all personnel were advised not to feed anything to RPC-XXXX that could result in accidental termination of RPC-XXXX or containment breach. During a containment breach caused by RPC-███, RPC-XXXX had consumed D-████, cleared Foundation security and escaped into the nearby ocean, quickly creating a dead zone fifteen kilometers across after excreting record amounts of mucus. RPC-XXXX was recaptured █ days later by Agent [REDACTED] while on break. D-████ was later learned to have not existed, raising suspicion on how RPC-XXXX transformed without consuming a victim. Later studies revealed that RPC-XXXX had actually eaten a scientist and then, for some unknown reason, dressed as a D-Class and walked out of the facility on its own time, after breaching several other RPCs and stealing and leaking several documents, requiring large amounts of Class-A amnestics to be administered to ██ different countries.


RPC-XXXX placed inside conventional oven with an internal temperature of 450° Celsius. RPC-XXXX is observed to be “swimming” in the air inside of the oven as though it were regular water. Test aborted when RPC-XXXX broke the glass on the door of the oven and maimed assistant researcher [REDACTED].
Note from Dr. ██████-The fact that this… thing… broke that glass is nothing compared to the fact that it was swimming in the goddamn air and has a taste for human flesh. Am I the only one who is a little bit alarmed by this?

RPC-XXXX is given one can of ███████-brand tuna fish. Successful transformation into can and contents verified. D-34286 instructed to open can and eat contents. Approximately ██ minutes passed before subject suffered a brain aneurysm as well as multiple other major organ failures. Subject’s corpse reanimates exactly 55 seconds after complete death of subject. RPC-XXXX returns to typical form ██ weeks later.

To view a complete log of consumed items, please refer to document XXXX-CHFGFR

RPC-XXXX experienced a phenomenon in which it caused all metal within a █ kilometer radius to detonate as though explosive devices had been rigged, killing 9██ personnel and causing a site-wide containment breach. This event has been regarded as completely random as no event similar has occurred since. Investigations into why RPC-XXXX experienced this event have revealed that the event began precisely as [REDACTED], a caucasian male, was born. When questioned as to any memories of such an entity as RPC-XXXX, subject merely remembers “a lot of teeth, and they were covered in blood.” Amnesiacs deemed unnecessary by [REDACTED].