Sorry- I did forget to add that Cannon's brain completely took over Kingsley's body, but only when a memory trigger was set off such as hearing Boris repeat his enemies names or the police siren did Cannon's personality emerge from Kingsley's body. The Monster seeing Elsa sort of did that for him, but only enough to remember that he wanted to schtupp her.

As for the personality lying somewhere, I have my own personal beliefs. As an atheist (not a militant one , though), I believe that all of our personality rests solely in the brain. As Peter Cushing said in THE REVENGE OF FRANKENSTEIN, "As the brain goes, so goes life. The brain is life". However, I think there were cases where an organ recipient suddenly exhibited a trait(s) that once belonged to the organ donor. Wasn't there a heart transplant case where the recipient found themselves able to play the piano, even though they hardly knew how to play before the surgery, an ability that the deceased donor had possessed? Or is that just a myth?

"How can I handcuff a bloomin' shirt??!?"