Sightings of SCP-513-1 reoccur every 14 to 237 minutes. Questioning of bystanders indicates that SCP-513-1 is invisible to those who have not been exposed to SCP-513. Upon being sighted, SCP-513-1 reportedly turns away and runs out of view before disappearing without a trace. Roughly one hour after exposure to SCP-513, victims will begin to catch glimpses of SCP-513-1 when opening doors, walking past mirrors, turning their heads, or performing any other actions that result in a sudden change in visual perception. SCP-513-1 is the entity produced upon ringing SCP-513.
