Game [Halo] Halo Sentinel

Sentinel – Forerunner Automated Defense Drone in Halo​

The Sentinel is an autonomous flying unit created by the ancient Forerunner civilization. It serves as a guardian and maintainer of installations like the Halo rings, the Ark, and various hidden labs. In the Halo game series, Sentinels are often seen fighting the Flood or supporting the protagonist in certain missions.