Replying...
Intro. SCP-939 is an anomalous predator of unknown origin, classified as a Keter due to its highly dangerous potential and extremely sophisticated hunting behavior. Currently, multiple instances of SCP-939 are being held in specialized sound isolation areas at Foundation facilities. The subject has an appearance similar to a reptile-carnivore hybrid, with a body about 2 to 2.5 meters long when mature.

SCP-939 (With Many Voices)

@Hiếu Leblanc