Their goal is to contain supernatural objects [including building creatures and even events] so that the public will not notice them.
Anyone who witnessed or was influenced by SCP [except those inside the Foundation] will be erased. If necessary, they will be executed.
SCP is all supernatural things [ditto, including architectural biological events]. You said scp-173 scp-939 scp-106.
There are also "white mice" used by the foundation for experiments, that is, D-level personnel, which are selected from death row inmates all over the world. If necessary, those who commit minor or even innocent crimes will be selected.
The most famous SCP is 173. Here is a brief introduction.
SCP- 173
Security level: Euclid.
Accommodation: omitted.
Will teleport and break a person's neck without looking.
So you can't turn your head or blink.
Perception-can perceive the line of sight.
SCP- 173- Statue-The original work is a supernatural "creature (undetermined)" fictional in relay novels of SCP basic series. It is a humanoid statue made of concrete, which can be excreted, can move very quickly when no creature is watching (including blinking, even closing one eye, and can sense whether someone is watching), and has a hobby of wringing the neck of a creature (human).
Special containment measures: SCP- 173 should be stored in a locked containment area, with the true appearance of-173 at all times. If anyone must enter this area, the number of people entering must be no less than three, and the entrance door must be locked after entering. At least two staff members must keep eye contact with SCP- 173 at all times after the work is completed and before the entrance is reopened.
Description: SCP- 173 was moved to 19 in 1993, and its origin has been unknown. It is made of concrete and steel, and contains traces of Krylon brand paintings. SCP- 173 is mobile and hostile, but it can't move under direct vision. The line of sight with SCP- 173 must not be interrupted at any time, and the personnel in the container must give instructions before blinking. It is reported that the object will break the connection between the skull and the neck or strangle the person in the container. In the event of an attack, the person must follow the level 4 dangerous goods control procedure.
The personnel report pointed out that there would be scratching noise in unmanned containers. This is a normal phenomenon. If there is any behavior change, it should be reported to the supervisor on duty of HMCL for handling.
The reddish-brown substance on the floor is composed of feces and blood, and the source of these substances is unknown. Containers must be cleaned every two weeks.