A Forerunner Sentinel icon.
Sentinels are machines constructed by the long-extinct Forerunners to patrol the Halo ringworlds. They have basic AI, and need to be directed by a smarter intelligence, for instance, the Monitor, 343 Guilty Spark. Sentinels shoot beams of energy that are very effective at quickly reducing energy shields or containing Flood threats.
My final Halo icon for the time being.
An edited screenshot icon of the model by Fingolfin:
(http://www.hiveworkshop.com/forums/models-530/sentinel-168377/)
Of course, I have permission. Check my Visitor Messages with him.
Keywords:
Sentinel, Forerunner, Alien, Ancient, Old, Floating, Float, Hover, Robot, Machine, Sentient, Patrol, Laser beam, Flood containment, Halo