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Sentinel - The Matrix

Sentinels from the Matrix series are the large, mechanical, squid-like robot-enforcers of Machine rule outside the Matrix itself. Seemingly mindless in their pursuit, sentinels can rip through a ship's steel hull with razor-sharp clasping appendages. No clear explanation is given for how Sentinels locomote through space, but otherwise, their morphology is quite practical, assuming robots ever evolved to that level of intelligence.