Quote Originally Posted by MJN SEIFER

That was a refrence to the Sword Ultima Weapon (Which I think is one of them Subtle nostaliga like Zidane talking about Cloud in FFIX rather that a proper sequell) That wasn't an enemy.

Or do you mean Ultimate Weapon? Or Even Atma? (Shortand Verison of Altima -Which was a misspelling of Ultima) Eeither way they weren't INPORTANT Enemys. So it is not them.
Ultima Weapon is an enemy in FF7 (and FF6, when he appeared as Atma) which reappears in FF8, thus it is possible that they were just referring to it when they said that a previous enemy would return. It would be the far more obvious assumption, rather than to consider Sephiroth or Jenova.

I have all of the FF8 FMV’s on my computer, would you be able to describe to me which FMV you say Jenova appears in?