Per 
Item #: SCP-XXXX
Object Class: Keter
Special Containment Procedures: SCP-XXXX is to be contained in a large, 40 Meter x 40 Meter x 40 Meter room along with SCP-XXXX-2. Separation of the 2 SCP objects is strictly prohibited. In the chamber a machine capable of of crushing a human skull the size of SCP-XXXX but would not be lethal enough to seriously harm SCP-XXXX, hereby referred as a "Skull Compressor". Behind the Skull Compressor, a metal box capable of fitting SCP-XXXX-2 must be placed behind of the Skull Compressor where SCP-XXXX can see/hear it if it were to be standing in-front of the Skull Compressor. Note: The Box must have a remotely openable and closable door, along with gas valves in them.
SCP-XXXX-2 must always be in the chamber. To keep her (SCP-XXXX-2) in the containment chamber, all that is necessary is to keep her in the metal box that was mentioned before.
No fewer then four (4) armed foundation personnel equipped with radios on channel 1 must be guarding the containment chamber door at all times. Only personnel with Level 5 Clearance are allowed to enter SCP-XXXX's containment chamber when not testing.
Description: SCP-XXXX is a invisible humanoid of unknown size. Estimates say that SCP-XXXX is at-least 20 meters tall, but estimates can be very inconsistent. Studies prove that SCP-XXXX is male, and has some sort of headgear on his head that resembles a top hat, however some personnel theorize that it is a bowler hat. SCP-XXXX can't be seen at all by the human eye. However, SCP Foundation Channel 1 will play a 1 Hz tone, and the closer you get to SCP-XXXX the louder the tone will get until it reaches a 1000 Hz tone, and at that point you would be directly in-front of SCP-XXXX. The source of this tone is, in-fact from SCP-XXXX, however it is unknown how this noise is broadcasted. This is the only noise that ever comes from SCP-XXXX. Due to this anomalous activity, Foundation channel 1 can not be used for communication at Site-██.
SCP-XXXX-2 is also a invisible humanoid of unknown size. Estimates say that SCP-XXXX is only 1 meter tall, and this has seemed to be accurate. SCP-XXXX resembles a 6-year old girl. SCP-XXXX can't be seen at all by the human eye.
