Per 
SCP-XXXX's SnapChat story 2 hours after the mass shooting. (See Addendum XXXX-A) The foundation immediately recovered him the next day.
Item #: SCP-XXXX
Object Class: Safe
Special Containment Procedures: SCP-XXXX is allowed to freely roam the facility, but otherwise must stay in it's containment cell between 8PM-7AM for sleeping. All personnel are allowed inside SCP-XXXX's cell, but cannot be released from the site's grounds. SCP-XXXX's cell should contain his personal belongings, including a gaming computer, smartphone, game consoles, magazines, clothing suiting to his likeness, and vape.
Description: SCP-XXXX is a 22-year old male of Caucasian ethnicity named Devin ████. SCP-XXXX's main anomalous effect is that he cannot take damage from anything. Any attempt to kill SCP-XXXX will result in no damage at all to SCP-XXXX. When a gun is fired directly towards SCP-XXXX, the bullets simply pass right through him with no bullet holes or blood.1
Addendum XXXX-A: SCP-XXXX was found 2 hours after a terrorist attack at ████, California. During the attack, 10 people died and 89 people we're injured, but SCP-XXXX came back with no damage, and no signs of bullet holes, blood, or any other physical damage. 2 hours after the terrorist attack, SCP-XXXX went back home and posted on his SnapChat story conformation that he lived, with no physical damage. 24 hours after he posted it to SnapChat, the foundation successfully found his location, and transferred him to Site-XXX.
Addendum XXXX-B: SCP-XXXX's mother, ██████ ████, told the foundation about the story of her son's anomalous powers. She told the foundation that one day in 201█, when SCP-XXXX became a teenager, he tried to kill himself by shooting himself up the chin, only for no damage to be taken. SCP-XXXX's mother claims that SCP-XXXX cannot die, but feels like he will die once he starts disintegrating into nothing more than rotting flesh and bones.
Addendum XXXX-C: The following is a log showing SCP-XXXX and SCP-682 interacting, to see if SCP-XXXX could survive SCP-682's dangerous attacks.
SCP-XXXX is released into SCP-682's containment area. SCP-XXXX immediately sees SCP-682.
XXXX: Bruh, what the fuck are you? You aren't really that poggers.
682: (loudly groans) Who the hell are you?
XXXX: Bruh my name is Devin ████, a fuckin' good ass dank gamer, ya know?
682: (grunts) Why are you here? I'm going to end your life before you know it.
XXXX: Oh yeah bitch? Bring it on you fucking pussy!
SCP-682 then proceeds to slash and wrestle SCP-XXXX with no damage shown
682: …How? How are you not dead?
XXXX: I fuckin don't know fam, and I do not care pussy.
SCP-682 then proceeds to eat SCP-XXXX. However, 30 seconds later, SCP-682 pukes out SCP-XXXX.
XXXX: Bruh, your fuckin' stomach is not lit, go fuck yourself.
682: (groans before roaring at the top his lungs before lunging at SCP-XXXX and squeezing and stabbing him with his claws, with SCP-XXXX taking and showing no damage)
XXXX: Bruh you're fucking boring, can I go back to my cell?
SCP-XXXX is then guided by the personnel back to his cell. When one of the personnel asked SCP-682 about SCP-XXXX, he replied with "This goddamn child can go fuck itself, and [DATA EXPUNGED] while he's at it."
Addendum XXXX-D: Similar to Addendum XXXX-C, the foundation placed SCP-XXXX in SCP-173's chamber alongside 2 other personnel. The 2 personnel's necks were snapped, but SCP-XXXX is still alive with no snapped neck.2
