Headmaster (Primax)/984.17 Alpha

Headmaster technology was the first such example binary bonding whereby a smaller being would form the head of a Transformer.

While some who have undergone it have commented at feeling a closer bond with their respective partners, there is no reason to believe there is any true psychic connection between them as in the binary bonding of other continuities.

History
The idea of an organic humanoid assisting a Transformer was thought up by Brainstorm when he observed a race on Cybertron where Hot Rod beat Blurr. Brainstorm's hypothesis was that Hot Rod won the race because Daniel assisted him. Daniel had worked the pedals whereas Hot Rod steered.

When Optimus Prime communed with Alpha Trion through Vector Sigma. Alpha Trion mentioned the union of an Autobot with that of a human being. Optimus Prime believed Alpha Trion was speaking nonsense.

But it would not be the homeworld of the humans where Headmaster technology would first be implemented, instead it would be the far world of Nebulos populated by the Green-skinned Nebulans. After some of the Autobots who had crashed on Nebulous were taken prisoner by the Decepticons. The remaining Autobots teamed-up with a resistance faction of Nebulans. Daniel, who had been injured partnered with Arcee. One of the Autobots, Cerebros refused to take part due to his pacifist beliefs.

Despite disagreeing with the original plan, Cerebros, however, would become part of unique implementation of Headmaster technology; a double Headmaster. Spike had used the controls to rebuild a Hive city into a space ship. They would return to Cybertron when all hope for an Autobot victory seemed to be lost and the space ship transformed into a giant body. Spike became the head of Cerebros and Cerebros then combine with the body to form Fortress Maximus. Unlike the other Headmasters, Fortress Maximus does not appear to be sentient and only has two minds; that of Spike and that of Cerebros. For most of the battle it was a apparent that Spike had the most control over the body. Possibly appropriate given Cerebros's pacifist beliefs.