SCP-507 was the skeletal remains of an adult man encountered by another SCP-507 upon his entry into Universe BE4-5YH-009.
Due to the surrealist encounters and periods of unconsciousness experienced by the visiting SCP-507 during his time in BE4-5YH-009, it is unverifiable whether the deceased SCP-507 was based in reality or a manifestation experienced by the visitor.
Assuming the SCP-507 of BE4-5YH-009 was real, SCP-507 was handled similar to other 507s by his version of the SCP Foundation, provided with the same containment chamber, jumpsuit, utility belt, and handgun. At some point 507 was sealed in his chamber, died, and decomposed until he was nothing but skeletal remains. When the body was discovered by a visiting SCP-507, the decedent's abandoned pistol was found and used to shatter the chamber's observation window. The remains were lost when the room was subsequently flooded with water.[1]