My favorite Cylon is Cavil.
You thought I was going to say Six, right? Just goes to show I do ot always think with my hormones. Most of the time, yes, but not always.
I will confess the change in Cavil’s character over the series from one of many sinister Cylon to the mastermind villain did not feel like it was planned from the beginning, but it was still pulled off well. Dean Stockwell makes a good villain.