SCP-682 is a massive reptilian entity that, despite countless extermination attempts by the Foundation, simply cannot be killed. It instantly regenerates from any damage, adapts its body to environments and methods of attack, and — above all — is recorded as harboring a deep hatred of all life. It is one of the most famous Keter-class objects.
The heart of the horror is the absence of an ending. An enemy that no measure, however powerful, can finish, and that only grows stronger over time, renders every human effort meaningless. In exposing human control as an illusion before an unkillable threat, it shares the sensibility of cosmic horror.