I have been drawing again lately, I just barely finish anything. When I do, I've neglected to upload it anyway.
These are basic drawings for Promethean Guardians, these are essentially sentinels in humanoid forms. Possibly around 10-12ft tall hulking masses of forerunner machinery, we have the subclasses of Guardian, the same way the Knights are sub-classed.
Guardian: Basic Infantry, equipped with Hardlight sword and Light Rifle/Suppressor.
Shifter: Overwatch and Intel-Gatherer. These Guardians cloak and watch intruders, and will either attack longrange with Binary Rifle/Lightrifle. Or call in support via a portal.
Carnifex: Essentially the tanks of the Guardians, these are afforded additional hardlight armor, along with 2 smaller shoulder-mounted incineration cannons. (If these were ever in a game I'd give those cannons a slow, obvious charge time to shoot).
Commander: This unit can direct other units into battle, and even open slipspace portals to call in watchers or crawlers. The commander is equipped with a Hardlight shield, Lightrifle/Scattershot.