The game FFVII is one of the most intricately designed FF's and it has one of the best (and consequentially most controversial) plot of any game I know. Though many aspects of the game have been debated quite a bit, by far the one that gets the most heat is:
Was it Jenova or Sephiroth in control?
I assert that it was Sephiroth. I say this not because I'm just some fanboy who listens to everything the UOG says. I do have evidence to back this up. First, in Shinra HQ, Jenova does not have a head and is therefore rendered immobile. At least, she isn't able to move on her own. It is Sephiroth's will that causes her to move around. Now, one arguement I've heard against this is that the Masamune blade Sephiroth carries with him can only be wielded by him, not only that but where could it possibly have come from.
Well, the hole with that arguement, is that Jenova probably took a small part of herself and altered her appearance. Or should I say Sephiroth made her to do this to make it look like it was him. We know from the game that Jenova has the ability to shapeshift, so this is a pretty valid assertion. The other hole is that if that is the real Masamune blade, then who was wielding it? Sephiroth's real body is being held in the Northern Crater in a Lifestream crystal.
Another arguement commonly used against my theory is that Sephiroth did not recognize Cloud at all on the boat to Junon. Let's not forget though, that this is Sephiroth we're talking about. The first time that you enter Northern Crater, Sephiroth tells Cloud the "truth" about his creation. Of course, we all find out that this is a lie later on in the game. Well, a half-lie. Truth and lies mixed. Generally, yes, someone will recognize the person that tried to kill them, but not if they're purposely trying to decieve that person. Cloud still thinks Sephiroth is dead and Sephiroth wants him to be unsure of what happened that day in Nibelheim to make it easier for him to control Cloud.
Which brings me to my next point. Jenova's only true instinct is destroy. This pretty much ix-nays her from being a sentient life-form. Though cunning in the way she can cause destruction, still all just based on instinct. She would have no reason to take the form of a person who everyone, especially Cloud, believes to be dead. While it's true that Cloud does carry Jenova cells within him, he has no other personal connection to Jenova. Sephiroth, on the other hand, floated around in the Lifestream for a few years with her head. It is stated in the game (can't remember where, sorry) that Sephiroth floated around in the Lifestream gathering the knowledge and power of the Ancients. Wouldn't it also make sense that he gathered the knowledge and power of Jenova? Had Jenova been in control, she would have tried to appear to the party as someone that they could trust, not a figure that would plant seeds of doubt in Cloud's head.
The connection between Aerith and Sephiroth brings up some interesting information. Sephiroth believes himself to be an Ancient because Professor Gast wrongly identified Jenova as an Ancient. Also, Sephiroth thinks that he is the son of Jenova (to an extent he is, but he has no direct relation to her). I assert that the death of Aerith was not just to try and stop Holy from being summoned, but I think it was kind of a pride thing for Sephiroth. I belive (and this is my own personal theory; it is supported by almost no in-game facts, just a lot of experience with the human psyche) that Sephiroth saw Aerith as a someone trying to take away his glory of leading "Mother" to the Promised Land. He couldn't let Aerith take that away from him.
Like I mentioned before, Cloud has no personal relation to Jenova, and so it is unlikely that she would be able to use him as a puppet. We're pretty sure that Sephiroth was the human being with the highest concentration of Jenova cells present in him to ever exist. Since Sephiroth was a sentient being and Jenova wasn't, his will to live and not just survive would be much stronger than hers. He desperately wants to break out of the mako crystal he is in, and until Jenova is reawakened, this cannot happen.
I think that when Cloud came within close proximity to Jenova in Shinra HQ, that it somehow reactivated her cells for Sephiroth to control again. This is also when Cloud starts to fall under the control of Sephiroth some. I theorize that it was like a small-scale Jenova Reunion, that reactivated the cells in both of them. Because Sephiroth has such a high concentration of Jenova cells within him, he can manipulate others that carry Jenova cells to do what he wants. Well, obviously the largest concentration of these cells would be in Jenova herself, so that's who he chose to control.
These are the arguements I have for why it was Sephiroth in control and not Jenova. And I do want to take this time to point out that the UOG also says this. Please, post your own theories, and if you have any substantial evidence that would refute mine, I'd like to hear it.
Was it Jenova or Sephiroth in control?
I assert that it was Sephiroth. I say this not because I'm just some fanboy who listens to everything the UOG says. I do have evidence to back this up. First, in Shinra HQ, Jenova does not have a head and is therefore rendered immobile. At least, she isn't able to move on her own. It is Sephiroth's will that causes her to move around. Now, one arguement I've heard against this is that the Masamune blade Sephiroth carries with him can only be wielded by him, not only that but where could it possibly have come from.
Well, the hole with that arguement, is that Jenova probably took a small part of herself and altered her appearance. Or should I say Sephiroth made her to do this to make it look like it was him. We know from the game that Jenova has the ability to shapeshift, so this is a pretty valid assertion. The other hole is that if that is the real Masamune blade, then who was wielding it? Sephiroth's real body is being held in the Northern Crater in a Lifestream crystal.
Another arguement commonly used against my theory is that Sephiroth did not recognize Cloud at all on the boat to Junon. Let's not forget though, that this is Sephiroth we're talking about. The first time that you enter Northern Crater, Sephiroth tells Cloud the "truth" about his creation. Of course, we all find out that this is a lie later on in the game. Well, a half-lie. Truth and lies mixed. Generally, yes, someone will recognize the person that tried to kill them, but not if they're purposely trying to decieve that person. Cloud still thinks Sephiroth is dead and Sephiroth wants him to be unsure of what happened that day in Nibelheim to make it easier for him to control Cloud.
Which brings me to my next point. Jenova's only true instinct is destroy. This pretty much ix-nays her from being a sentient life-form. Though cunning in the way she can cause destruction, still all just based on instinct. She would have no reason to take the form of a person who everyone, especially Cloud, believes to be dead. While it's true that Cloud does carry Jenova cells within him, he has no other personal connection to Jenova. Sephiroth, on the other hand, floated around in the Lifestream for a few years with her head. It is stated in the game (can't remember where, sorry) that Sephiroth floated around in the Lifestream gathering the knowledge and power of the Ancients. Wouldn't it also make sense that he gathered the knowledge and power of Jenova? Had Jenova been in control, she would have tried to appear to the party as someone that they could trust, not a figure that would plant seeds of doubt in Cloud's head.
The connection between Aerith and Sephiroth brings up some interesting information. Sephiroth believes himself to be an Ancient because Professor Gast wrongly identified Jenova as an Ancient. Also, Sephiroth thinks that he is the son of Jenova (to an extent he is, but he has no direct relation to her). I assert that the death of Aerith was not just to try and stop Holy from being summoned, but I think it was kind of a pride thing for Sephiroth. I belive (and this is my own personal theory; it is supported by almost no in-game facts, just a lot of experience with the human psyche) that Sephiroth saw Aerith as a someone trying to take away his glory of leading "Mother" to the Promised Land. He couldn't let Aerith take that away from him.
Like I mentioned before, Cloud has no personal relation to Jenova, and so it is unlikely that she would be able to use him as a puppet. We're pretty sure that Sephiroth was the human being with the highest concentration of Jenova cells present in him to ever exist. Since Sephiroth was a sentient being and Jenova wasn't, his will to live and not just survive would be much stronger than hers. He desperately wants to break out of the mako crystal he is in, and until Jenova is reawakened, this cannot happen.
I think that when Cloud came within close proximity to Jenova in Shinra HQ, that it somehow reactivated her cells for Sephiroth to control again. This is also when Cloud starts to fall under the control of Sephiroth some. I theorize that it was like a small-scale Jenova Reunion, that reactivated the cells in both of them. Because Sephiroth has such a high concentration of Jenova cells within him, he can manipulate others that carry Jenova cells to do what he wants. Well, obviously the largest concentration of these cells would be in Jenova herself, so that's who he chose to control.
These are the arguements I have for why it was Sephiroth in control and not Jenova. And I do want to take this time to point out that the UOG also says this. Please, post your own theories, and if you have any substantial evidence that would refute mine, I'd like to hear it.