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Sentry

Sentries are humanoid-esque machines lacking arms. The plating of their body is green, with their knee joints and feet being a metallic grey. Their upper body consists solely of the barrel of a sniper rifle, with an antenna protruding from the back of it. To the right of the barrel is a small camera with pink lens, most likely the Sentry's eye. A small ammobox is attached to the back of Sentry's hip.