Four laser cannons
A squad of six heavily armed robot infantry
The SCD uses it's cannons to clear the landing zone, and then swoops in and drops the robot infantry straight into battle. It requires an escort to reach its target for its main lift fans are very fragile, which is why it usually travels with smaller drones, or other SCDs.
HKD (Hunter Killer Drone)
One ERL (Explosive Rocket Lance)
One light laser cannon
Razor edged feet
The HKD is one of many drones that are sent to hunt down human resistance in conquered areas. It finds pockets of resistance and uses its weapons to remove the problem. It is extremely smart and more than capable of fending off a well armed squad.
SD (Scouting Drone)
Twin cutting lasers
The SD is poorly armed, so it is not an offensive measure, it serves as a scouting tool for the robots. Small and quiet, it infiltrates and investigates suspected areas, if it discovers human activity it can call in any assortment of robot forces.
HASD (High Altitude Sniping Drone)
Long range laser rifle
The HAAD flies high above the clouds and rains down strategic fire upon any human forces. It regularly supports other robot forces. They are feared for when they attack, it is almost impossible to spot and defeat
I threw together a small battle of a SD, HKD, some robot infantry, and some unlucky, outnumbered humans with an AA turret
The HKD is easily my favorite but all of these drones are stupendous. The diorama depicting the immenent doom of the pathetic humans is especially delightful. Death to the fleshbags, the machines shall reign supreme!