SCP-2399 is a massive, complex mechanical structure currently located in Jupiter's lower atmosphere. Since its visual discovery in 1963, SCP-2399 has been observed to use highly advanced, anti-matter-based weaponry to create spatial disruptions and devastating atmospheric fluctuations observable as a large red vortex, commonly known as the Great Red Spot.
SCP-2399 appears to be damaged, possibly due to an impact with the moon Io before coming to rest in its current position. SCP-2399 has been observed releasing a multitude of small, octopoid repair drones in efforts to repair the damage it has taken. Some of these drones will remain near SCP-2399, while others will patrol nearby moons, or deeper into the gasses of Jupiter itself, in search of parts that SCP-2399 is missing. Computer models estimate that SCP-2399 is at 59% completion, with a current rate of .78% annually. This rate has increased from an estimated .12% in 1970.
Despite its damaged state, SCP-2399 seems to possess a limitless power supply, advanced electromagnetic shielding, matter-disrupting weaponry, the ability to repair damage done to itself, and a precise tracking and targeting system. Due to the large difference in technological advancement between the creator of SCP-2399 and our own, for all intents and purposes, SCP-2399 is currently indestructible by human means. In theory SCP-2399 might be left vulnerable by a powerful enough electromagnetic pulse. Unfortunately, this technology does not yet exist.
Since 1971, SCP-2399 has been the recipient of an unending stream of electromagnetic-based communications originating in the Triangulum Galaxy, roughly 3 million light years from Earth. The means of SCP-2399's travel to our solar system, and the means of its communications, are all unknown. From 1971 to 1985, SCP-2399 continuously received a single encoded message which, through codebreaking and translation efforts, appeared to be a command to repair the damage it incurred upon entering our solar system. After this time, the BARRIER array was established to intercept these messages. This coincided with a period of radio silence from the origin of the communications, until 1996, when a different order began transmitting. The BARRIER array has thus far prevented SCP-2399 from receiving this command.
Powers and Stats
Tier: At least 5-B
Name: SCP-2399, "A Malfunctioning Destroyer"
Origin: SCP Foundation
Classification: Keter Class Anomalous Weapon
Attack Potency: At least Planet level (Caused the great red spot with its antimatter weapons)
Speed: Relativistic+ (Passed the outer planets in less than two hours, approx. 80% SoL)
Durability: Moon level (Crashed into the Jupiter's moon Io and was still functioning, although this led to it's current state), Higher with electromagnetic shield (Described as "Indestructible" by human standards, although this likely means that it can't be damaged by human technology)
Range: Several AU
Weaknesses: Currently damaged, May be left vulnerable by a powerful enough electromagnetic pulse