From Data Realms Wiki
The Dummies were once used as training equipment, cannon fodder, and target practice, that is, until they became sentient and revolted to serve their own interests.
Once these were used by brains as back ups and to expand their control over an area.
A light, cheap, and reliable unit but has a bad habit of having its limbs removed. The joint weakness isn't that notable because no matter how many limbs you hack off a dummy will not die. Target the head or torso to stop them. They do not bleed like humans and are very resistant to impact damage.
The Dummy Dreadnought is literally a walking dreadnought, as it has the strongest protection of all Dummy units. It is protected layers by layers of protective casing, and can even sustain more gunfire than the Browncoat Heavy! Sadly, like every other heavy unit, it is very slow. It also can not use jets.
Dummy Small Turret
It may be small and unable to move, but it's generally mowing you down by time you knock its armor off with a standard weapon.
Dummy Drop Ship
An orange drop ship used by the Dummy faction. It has much less of its engines exposed, so it's less likely to lose one. Its doors can be destroyed by gunfire. It's also a bit cheaper, and harder to control than a Drop Ship Mk1.
A small orange rocket low capacity for cargo. It's harder to control than a full size rocket and easier to shoot down, but it's cheaper. Strangely the computer does not use this rocket in skirmish fights, even in the missions featuring exclusively dummy faction materials. Like all rockets, it makes an excellent projectile when crashed in to a target, especially when filled with bombs or a large amount of crabs.
see also: ACRocket