A_13 or cer-0 is a dangerous entity that has been reported to be able to appear in various applications and digital games, even having the strength to manifest in reality. It has the ability to cause victims to have nightmares, paranormal activity, unusual behavior from their computer or device they encountered it on, and odd encounters online afterwards. The account 0 owns, @cat-0-0-0, has other odd anomalous accounts following it e.g. @SCRITTSCRITTSCRITT, @Slendytiubes, @fivebearsFive, and more.
Reported by @GarnetonScratch 0 can be interacted with on @cat-0-0-0 Risk: High-end Danger + Unavoidable Status: Active Type: Entity Note: To avoid contact with cer-0, you must block a specific domain named [wss://0.cat] from your network.