The Ghost of Frankenstein/YMMV

"Ygor:"Tonight, Ygor will die for you!""
 * Complete Monster: Good old Ygor once again takes pride of place. He seems to feel some fondness for the Monster, but in the end he has his "friend's" brain removed so he can become an immortal, invincible, superhuman monster and Rule The World.
 * Nightmare Fuel: Ygor gets his brain transplanted into the Monster, and there is never another brain switch in the series. But the Monster becomes nothing but a lumbering, inarticulate brute after this. Which means that Ygor, thanks entirely to his own treachery, ends up trapped inside of a hideous monster. Forever.
 * Moral Event Horizon: The Monster crosses this when he demands that Frankenstein put a little girl's brain into his head after kidnapping her from her home. And then he crushes poor old Ygor to death!


 * Ygor crossed the Horizon years ago, but even so, his desire to usurp his "friend's" body so he can live forever deserves dishonorable mention.