Unidentified Sentinel variant

This Unidentified Sentinel variant was an extremely large Sentinel-like machine used by the Forerunners during the Forerunner-Flood war. It is one of the largest Sentinel variants observed to date, dwarfing the Strato-Sentinel in comparison. Its armament includes an extremely powerful energy weapon, capable of firing a lightning-fast energy beam at long range and producing an explosion powerful enough to level entire cities.

These Sentinels deploy out of the ground vertically, with the "bottom" of the Sentinel in the vertical configuration rotated to face forward, firing the aforementioned energy beam.

Production notes
"Basically filling the role of mobile, full-service construction operations, these Petronas Towers-sized sentinels extract raw materials from the source, processes them in transit and deposits building materials at the work site. The work site being a Halo."

- The Art of Halo 3

Although first appearing in Halo Legends' Origins part one short, these Sentinels were originally designed and concepted by Bungie for Halo 3, making them one of a number of designs including the Guardian and Strato-Sentinels and Forerunner City to brought back from the cutting room floor in such a manner. In the original game, the Sentinels were intended to be similar to the Strato-Sentinels, involved with construction and materials extraction for the Halo Array.

List of appearances

 * Halo Legends
 * Origins