Per 
Item #: SCP-XXXX
OBJECT CLASS: Euclid
SPECIAL CONTAINMENT PROCEDURE: SCP-XXXX is to be kept in an ordinary D-class cell with 2 guards immediately outside the cell. Level 3 or higher clearance is required to gain entry into the cell.
DESCRIPTION:
SCP-XXXX is a D-class personnel, male, standing at 1.8 meters tall, and weighing about 125 Kilograms.
SCP-XXX was discovered when it, along with 2 other D-class personnel were doing a routine clean up of SCP-173's cell. During the cleaning, while it was still watching SCP-173, the other D-class sneezed, which caused him to blink, and 173 moved to snap their neck. SCP-XXXX had full eye contact, and witnessed it moving to kill the 2 D-class in 173's cell. If SCP-XXXX didn't immediately scream in terror, shouting that 173 wasn't behaving normally, SCP-XXXX most likely would have died there. However it's screaming got the attention of the guards, whom immediately took SCP-XXXX to a new cell.
Dr. [Redacted] looked at a recording of what happened, and realized that SCP-XXXX was, potentially, anomalous. Dr. [REDACTED] desired to have SCP-XXXX tested with SCP-096 to see what would happen, with his reason being that, if the D-class wasn't anomalous, nobody would really care if it died.
When SCP-XXXX examined a photograph of SCP-096's faces, Dr. [REDACTED] checked with the guards to see if 096 was reacting. To everyone's surprise, 096 didn't react to SCP-XXXX seeing it's face. This revelation caused several questions that Dr. [REDACTED] wanted answered.
Dr. [REDACTED] didn't know if SCP-XXXX was immune to all anomalies or only specific ones. He requested to do a cross test with SCP-999, suggesting this test could figure out if SCP-XXXX was immune to all anomalies or just certain ones. When SCP-999 made contact with SCP-XXXX, it reacted exactly as everyone does when SCP-999 touches someone, even going so far as to play "tickle fight" with it. This shows that SCP-XXXX has limits on what he is and isn't immune to.
Dr. [REDACTED] came up with a theory based on this one test, the theory being that SCP-XXXX is only immune to any affect that requires SCP-XXXX to actively do something, which he referred to as "active anomalies" in his report, while "static anomalies", or anomalous effects that don't require SCP-XXXX to do anything, can affect him.
Further tests seem to prove this theory. When cross tested with SCP-035, SCP‐XXXX did experience the urge to put on the mask, but when he did, SCP-035 was unable to possess his body. However, SCP-XXXX did end up requiring medical treatment for the corrosive liquid, but ultimately survived.
It should be noted that Dr. [REDACTED] made a request to cross test SCP-XXXX with SCP-682 since he theorized SCP-XXXX's anomalous capabilities could potentially allow it to kill 682. Dr. [REDACTED]'s request to cross-test with SCP-682 was denied, and all further requests to attempt cross-testing are to be denied due to the cruelty of the nature of cross-testing, as SCP-XXXX does not have any ways to actively harm SCP-682. However, if a way to keep SCP-XXXX alive while cross-testing is discovered, this restriction will be lifted.
Further cross-testing has been deemed necessary, and shall be done when possible in the future, however all cross-testing involving SCP-XXXX requires approval and a security clearance level of 3 or higher.
