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SCP-533 (also known as Crystalline Butterflies) is a safe-class SCP under the containment of SCP Foundation. It also appears in Unity's 2018 remake version of SCP - Containment Breach as minor antagonists.
SCP-553 refers to a colony of winged organisms superficially resembling butterflies, approximately 140,000 of them. They possess a silicon-based biochemistry and are composed primarily of calcium and silicate compounds. The swarm communicated via echos and would warn the colony when danger occurred.
The swarm of SCP-553 would gather when an adult instance met with danger and sent their message. They attack their target with their solid wings, cutting their skin and causing damage. The target would die of their injury either instantly, or through infections afterwards.
In SCP - Containment Breach Remake
The swarm of SCP-553 appears as minor antagonists in the 2018 remake of SCP - Containment Breach, where it is found in its temporary containment chamber underground.
The swarm of SCP-553 can be seen at the end of the tunnel and would attack the player if they came too close. They would rapidly attack the player for one damage each though it would stack up easily. SCP-553 has no impact on the game as a whole and is a showcase.
The current version of SCP-553's containment chamber is a temporary one. It is revealed that in a future update, SCP-553's true containment chamber will be added. However, it will be damaged and empty.
- This silicate impurity adds rigidity to the creature, giving it a rating from 3.5 to 4.5 on the Mohs Hardness Scale.
- SCP-553 on SCP Foundation Wiki.
- SCP-553 on SCP: Containment Breach Unity Edition Wiki (archived).
- SCP-553 on SCP: Containment Breach Unity Edition Gamepedia.