Binary bonding

Binary bonding is a kind of technology from the Generation 1 continuity family.

Binary bonding is a process in which a Transformer enters into a symbiotic relationship with a smaller being (usually organic, often an Earthling or a Nebulan) who has been augmented with the ability to transform into a component or weapon.

Fiction

Generation 1

Binary bonding was by this process that the Headmasters, Targetmasters, and Powermasters came into being.

Unicron Trilogy

Ultra Magnus was binary-bonded to his Mini-Con partner Knock Out. Force of Habit Knock Out formed the vehicle mode head and central torso.