427 Flesh Beast 2

Intelligence cannot be accurately gauged, but mapping of biological enhancement of the brain as a direct relationship with optimization of other systems suggests intelligence could exceed levels measured in humans when fully transformed.

[...]

Instances of SCP-427-1 (colloquially referred to as "Flesh Beasts") created by SCP-427 must be killed immediately as it is impossible to communicate with or experiment on them safely.

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SCP-427