Controller is a Decepticon Mini-Con in Transformers:Aftermath. He is the smallest member of the team, and wants the All Spark's power to remake him larger. He is very dangerous, however, and quite stealthy due to his small size. His most distinctive weapon are his control nanites, which can overtake the mind of another Transformer and make them follow him. He is Chopper's partner, and often assists him.
Controller's exploits as Chopper's partner are legendary. He was reassigned to the Empire 1 along with Chopper. In Book 1, Controller scans a custom Aprilia RSV1000R motorcycle. He does not appear in Book 2, but appears later.
Controller is named after his control nanites. These tiny devices can burrow into any electrical device, even another Transformer, and put them under his control. These can be overcome with a significant exertion of the mind, but only Brainstorm has ever done so. Should something under his control be destroyed, Controller will go into stasis lock. He is also armed with sharp claws on his hands, machine guns in his wrists, and Tran-spheres. These baseball-sized devices can scan small objects as alternate modes and mimic their functions. Controller's small size limits his strength, and he cannot go up against another Transformer in combat. Against humans, however, he is an excellent combatant. When Powerlinxed to Chopper, he activates a chest cannon and shoulder missiles. He can activate a holomatter avatar for stealth.
Controller is mostly bright green, with black stripes and gold rims. He has yellow eyes. He shares a transformation scheme with Deluxe Movie Arcee.
Behind the scenes
Original alternate modes included an iMac, or the ability to scan any mode of similar size. This feature was incorporated for his Trans-spheres.