- The Centurion Droids are non-sentient drones from the Generation One continuity family.
The Centurion Droids are an automated defense guarding the Vector Sigma supercomputer. Though possessing no weapons, Centurions are trained in hand-to-hand combat to stop all intruders. They also possess very strong armor that protects them from attacks, making them even more dangerous. They tend to be encountered in large numbers.
They must be either evaded or tricked in order for one to approach Vector Sigma. Fortunately, that's not hard.
American The Transformers cartoon continuity
The Centurion Droids were first encountered deep within planet Cybertron, guarding the chamber of Vector Sigma from both Autobots and Decepticons. Megatron was able to bypass them by using the Key to Vector Sigma to override their defenses, but Optimus Prime and his Autobots were not so lucky. Unable to defeat the Centurions in combat, the Autobots kept them busy with a slew of ancient worker droids. The worker droids stumbled off the edge of a chasm, leading the Centurions to follow like lemmings.
Japanese cartoon continuity
The Headmasters cartoon
The Centurion Droids were encountered by Optimus Prime again in the year 2011 when Prime was on another mission to reach Vector Sigma. However, this time around, the Centurions did not appear to be nearly as threatening, as Prime simply plowed through them like an American football player.
IDW comics continuity
Greatly upgraded Centurion Droids were employed by Bludgeon and his crew to prevent disruption of their resurrection of Thunderwing and their study of the Pretender graft process. A squad of these droids managed to corner the Technobots Nosecone and Afterburner before being destroyed by the arriving Wreckers.
After the discovery that Thunderwing expended ultra energon more quickly the harder he was hit, Optimus Prime had Dogfight reprogram the remaining Centurions to attack the gigantic Decepticon. Attacking en masse, the Centurions managed to cause a massive spike in Thunderwing's internal catalytic flux, but they were quickly destroyed.