The problem with sephiroth is that he disapoints. The game spends the majority of disc one building him up (Slaughtering everyone at shinra, displaying his power in the nibelheim flashback, skerwing the midgar zolom and of course stabbing aerith) With all of this, we're loving this mysterious and powerful character who's intentions aren't clear but seems to be planning something bad. Let's find out more about him, let's see what else he does, let's fight him! But alas, his plan just seems to be "I will kill you all and become all powerful", his next step is to disappear and sleep in the northen crater until the end of the game.

Your mysterious cool villain becomes your average narcissistic meglomaniac "i want to destroy the world" stereotypical villain who does nothing from halfway into the game right up until the end where you get to fight him for 5 minutes before he transforms into some weird floaty thing then dies. How uninspired and very anti-climactic. Sephiroth fans need to address this before claiming he is the ultimate villain