SC-390 is a fictional entity from the SCP Foundation, a collaborative writing project that features a collection of supernatural and anomalous objects. Each SCP entry describes a unique item, creature, or phenomenon, detailing its properties, containment procedures, and any related incidents. SC-390 specifically refers to a particular object that exhibits unusual behavior or effects, which are documented in the SCP database. The SCP Foundation aims to secure, contain, and protect such anomalies to prevent them from causing harm to humanity or the environment.