Mirabilis is in a constant telepathic link to Archanfel, so they more or less share everything, thoughts and feelings, and can sense one another. Utter intimacy (hold your horses fan girls) in a scale that is difficult to understand, at the same time they still have different minds and personalities. Barcus apparently did this at Alky's command, and made sure that Alky had an unlimited influence on our former hero. A question does creep up, since Mirabilis had started showing doubt over his actions, one wonders if Alky being knocked out has weakened his servitide. There is also a question of Mirabilis possibly influencing Alky, despite being the subjugated personality. We don't even know how much Barcus altered his mind as well. He seems to retain memories, but how much of them is open to question. Just when you learn a few details, we are stuck with 20 other questions because we haven't seen his point of the story progress in... years actually.