Sentinel Major
From Halopedia, the Halo wiki
File:3-Gold-Sentinals.jpg
Three Sentinel Majors firing beams
Sentinel Majors are artificial flying constructs designed by the Forerunners and serve on the Halo Installations. They are similar to a regular sentinel, but are gold in color, have stronger beams, and are protected by a light energy shield, they also fire more actually.
They were only observed on Installation 05.
