- Metal bodies, ranging from silver-white to dark grey
- No eyes but internal sensors
- All built with nearly identical physical characteristics
- Red, orange, or blue lights on their face & arms
- Incredible strength
- Built-in plasma blasters in their headpieces
- Detachable heads; to function as more nimble attack drones
- All are connected to each other through a central computer system
- Constructed by a species known as the "Builders";
- Considered to be slaves & controlled via pain simulators
- When they became self-aware, they violently overthrew & killed all Builders
- Decided that all biological lifeforms were a threat; started a war with them
- Ended the war when Charly Burke, a human, sacrificed herself to save them
