Arcana


 * Arcana is a Nebulan Headmaster partnered with the Autobot Brainstorm

For a man whose work has had such a big effect on the lives of so many Nebulans and Transformers, very few people really know the distant and remote Arcana. Not even Brainstorm, who shares his psyche can claim to truly fathom the workings of his partner's mind. But then Arcana seems to unintentionally cultivate an extremely anti-social persona, training first as a medical doctor, only to grow bored and focus on long forgotten and repudiated scientific lore of his planet and earn the ire of medical colleagues. Yet it was this combination of knowledge and skill, along with the combined input of his future partner that allowed the creation of the Binary Bonding process.

Marvel Comics continuity
(Events from the UK stories are in italics.)

Generation 1

 * Brainstorm with Arcana (Headmaster, 1987)
 * Arcana transforms from an armored humanoid into a robot head. Though he only came with his partner Brainstorm, in head mode he is compatible with any other Headmaster body. On the larger Headmasters, he gives Brainstorm's tech spec stats in their display window, but the smaller ones still display their normal heads' stats due to their construction.