Special Containment Procedures: Conventional containment is unnecessary. Instead, SCP-6403 is to be integrated into the Fourth House program, with 6403-A and all -B instances to be relocated to Site-237. The entrance to SCP-6403-C is to be relocated to Site-237 as well, with the original entrance being destroyed by SCP-6403.
Description: SCP-6403 is a Class 5-3-0 Spectral Entity currently residing with the Fourth House program at Site-237. SCP-6403 is believed to have been a reality bender before being converted into a Spectral Entity, as it has a significantly high Hume count and can compress space, making large objects fit in smaller areas, among other things.
SCP-6403-A is a humanoid automaton composed of bronze, approximately 2 meters tall, appearing to be of Mekhanite design. Current estimates place SCP-6403-A to be over 5000 years old. SCP-6403 is currently believed to be bound to SCP-6403-A by unknown thaumaturgical rituals. Currently, no way of removing SCP-6403 from SCP-6403-A has been discovered.
SCP-6403-B is the designation for four other humanoid automatons, similar in shape and design to 6403-A, composed of iron and steel. SCP-6403 is currently in control of all four -B instances and has been shown to rebuild or repair damaged instances.
SCP-6403-C is a spatial anomaly with the entrance originally located underneath the Knossos palace. SCP-6403-C contains a large maze-like structure containing a currently unknown number of corridors and rooms. The layout of this structure will constantly change, with all rooms and corridors moving to other locations, with the exception of the center room. Although SCP-6403 has some amount of control over this effect, it will happen regardless of SCP-6403 influence. While the geography close to the center is typically Euclidean, going too far away from the center will inevitably lead back to the center room.
Discovery: SCP-6403 was first noticed on May 9, 2016, when a spike of Hume and Ectoplasm levels were noticed around Heraklion, Greece via Foundation satellites. Deep-cover Foundation moles in the Greek government report that on this day, 3 teenagers disappeared that were last seen around the Knossos palace complex. Although it was originally thought that these were unrelated, 4 days later when 2 police officers went missing around the Knossos palace complex, another spike was noticed. At this point, the Foundation sent in MTF- Mu-13 ("Ghostbusters") to investigate, due to the potential of a Spectral Entity-related threat.
Addendum 6403.1:
After the events of exploration log 6403.1, Site-01 command voted to send the Office of Spectral Entity Diplomacy in, in an attempt to negotiate with SCP-6403. Foundation Diplomat Naomh Uma was dispatched to SCP-6403 location, along with an entourage of six (6) armed field agents in case of attack by SCP-6403 or other parties.
Addendum 6403.2:
On 5/3/2008, Site-01 command officially voted for the integration of SCP-6403 into the Fourth House program, after the recommendation of OSED and Foundation Diplomat N. Uma. With SCP-6403's consent, SCP-6403-A and all SCP-6403-B instances were relocated to Site-273. Members of MTF Sigma-3 ("Bibliographers") assisted in the destruction and relocation of SCP-6403-C. SCP-6403 has seemingly adapted well to its new location, with an interview with its assigned psychologist, Dr. Harold Tanaka, attached below.