MCO-120

**Item #:** MCO-120

**Object Class:** Neutral Keter

**Containment Solution:** MCO-120's containment zone is composed of two parts: primary containment, and secondary containment. Only level 2 and above personnel may enter the secondary containment zone, and the primary containment zone is only to be entered by level 3 and above, and only during emergency situations or when authorized by the Council of Crafters.

Primary containment is composed of a secure obsidian cube, 5 x 5 x 5 blocks in size. This chamber is inside of another layer of obsidian, with two blocks of water in between, and the main cube is filled with lava to minimize potential viewing of the object. Several tubes of water flow into the chamber, dispensing blocks into the containment cube. These need to be refilled every hour by Foundation personnel. If MCO-120 begins to grow in size, personnel with at least level 8/10 cognitive resistance will enter the chamber. The object is then to be attacked with ender pearls until it has reverted back to its original size.

Secondary containment is composed of a large, 32 x 32 x 24 block stone-brick chamber. The walls contain the water pipes which dispense blocks into the primary containment zone. A three (3) block wide catwalk extends across the top of the chamber (4 blocks from the ceiling) containing the entrance to the containment zone on one side, and a water elevator leading to the floor of the chamber on the other. On the floor of the chamber is a keycard-locked door leading into the Control Room, which contains the controls to open and close the cell, breach alarms, and the controls for the water pipes.

In the event of accidental or purposeful viewing of MCO-120 by a below level 8/10 cognitive resistance personnel, they should immediately exit out of Minecraft, and report to the medical lab in their particular MCS Real World facility. Depending on CRL and length of viewing, potential quarantine could last for up to 30 days.

If MCO-120 teleports, a breach is to be declared, and users are to use pre-installed software to locate MCO-120. It is to be attacked with ender pearls until it reaches player size and immediately recontained.

**Description:** MCO-120 is an entity resembling a pitch black user skin. The object has yellow eyes that appear to illuminate the area surrounding it. It possesses an all white mouth that it has been shown to open to about the width of an enderman’s.

MCO-120 is capable of moving at a speed of 8 blocks per second. It possesses 6 tentacle-like protrusions on it’s back, which occasionally search the 5 x 5 area around it for blocks. In the event it finds one, it will immediately break the block and appear to “consume” it. After this, MCO-120 will grow in size by about 1/2 of a block. In the event of MCO-120 reaching a size of 10x10x20 blocks, it will spontaneously disappear and reappear in a random location of the world, so far measuring a maximum distance of [REDACTED] blocks from it’s containment area.

Personnel, including NPCS, viewing MCO-120 directly (images and/or videos don’t count), will begin to experience visual hallucinations, often perceiving their computer as “still being on Minecraft” even if it is turned off or unplugged. They will see their screen and immediate surroundings as “melting.” This effect can only be reversed by weeks of mental treatment.

MCO-120 has expressed a mild desire to reach Earth (determined to mean the physical world.) It appears to have hostile intent, so it is to never be allowed to escape by any means.

1. ↑ MCO-120 is a direct retelling of SCP-4335 from the original SCP mythos. The original entity resides in Minecraft, and was the original inspiration for MCS.
2. ↑ Thought it does not appear capable of achieving this at this time.