It's good the motivation of the big bad for this episode however was pretty meh. What's the point of immortality if your stuck in a way that he is, at least Ferry's immortality gives her mobility and interactions even if you can say she is stuck like him to an extent, also his immortality is predicated on consuming others. Pretty inefficient if you as me he's Orochimaru but if Orochimaru was stuck in one place forever. Anyway he's an irredeemable villain so expect no mercy from him, or for him for that matter. The revelation was neat though I liked the reaction of everyone there, the sudden shock on their faces was realistic.