Quote Originally Posted by boys from the dwarf View Post
necron exploding and imploding and just dissapearing, is quite misleading but i believe necron only actually appeared when kuja destroyed the crystal.

necron wasn't just sitting there waiting for everyone to lose the will to live. he appeared when he was needed and dissapeared when he was no longer needed and he may yet return when it is time for him to reduce everything to the zero world.
The problem with your theory, is that Kuja didn't destroy the Crystal. He used Ultima against your party, not against the Crystal.
And like i said, if Necron was just retreating, he would just dissapear or go away. He would not explode/implode without any reason. The only evidence that you have, that Necron didn't die, is a quote from him. A quote that is very like what Zeromus said, but we know that Zeromus is already dead, so, why Necron cannot be dead too?
We have just a quote from him, saying that he is immortal. And we have a little video/cutscene showing his dead. What is more valid as an evidence?