Keter-class SCPs are considered the most dangerous and difficult to contain. These anomalies pose a significant threat to human life, civilization, or reality itself. Special containment procedures are extensive and often resource-intensive.
WARNING: Access to Keter-class documentation requires Level 4 clearance or higher.
Hard-to-Destroy Reptile
The Old Man
Contagious Crystal
What Happens After
Abel
I Am At The Center
Special Personnel Requirements
The Gate Guardian
A Door to Another World
[UNKNOWN]