Description from original post (created 2016-05-30 15:46):
My name's inspiration, the Prometheans!
Blue Battlewagon
Lancer
Orange Knight
Lancer
Battlewagon
Commander
“They're Forerunner robots. Hard light in battle armor. What can they offer us? Nothing but trouble, doctor. They're simply killing machines.”
— SPARTAN Gabriel Thorne
A Knight Battlewagon, one of the types of Promethean inhabiting Requiem.
The Promethean forces encountered by UNSC forces and Covenant Remnant insurgents on Requiem were primarily mechanical in nature, and encompassed various classes of leader units known as Knights, support drones known as Watchers, and small, pack-oriented Crawlers designed to overwhelm the enemy from different directions.
Significantly different from the original Prometheans,
these constructs were created by the Didact toward the end of the Flood
conflict; in order to render them immune to Flood infection, the Didact
used a machine known as the Composer
to convert his warriors into digital intelligences; the warriors
willingly accepted and were relieved of biological form. However, as the
Prometheans' numbers continued to dwindle, the Didact used the Composer
on a population of humans transplanted on a Halo Installation to create more of these mechanical Prometheans.
Visually, unlike most Forerunner technology which is chiefly
angular and geometric, these Promethean units have a more curved, almost
biomechanical aesthetic. Various Promethean units, including Knights
and Watchers, have distinct heads embedded in their mechanical
carapaces, complete with stylized facial features; this feature was
shared by the War sphinx used by the original Prometheans.
Source:http://halo.wikia.com/wiki/Promethean