Promethean Knights

The Promethean Knights are villains from the Halo Universe.

They are advanced Forerunner AI that serve and protect the Didact.

What's worse is that the Promethean Knights were, in fact, humans that have fallen victim to the Composer, a divice the Didact used to incinerate humans and convert them into raw material to create the Promethean Knights.

Variations
There are four variants of Promethean Knights in Halo 4. They fill a wide spectrum of battlefield roles.

The one pictured on the right is the standard Promethean Knight.

All Promethean Knight are commonly using the Suppressor on a regular basis.

Knight Lancer
The scout and marksman of the Knights. They wield the LightRifle and Binary Rifle. They use Blade Arms for close quarter combat. They are the variation of Knights that uses the Promethean Vision.

Knight Commander
The leader of the Knights directly from the field. They wield the Incineration Cannons, boast the greatest strength, and are able to deploy Autosentries.

Knight Battlewagon
The strongest of all the Promethean Knights. They only appear when the other forces fail. They wield the Scattershot and use the Hardlight Shield.