While Final Fantasy 7 Rebirth antagonist Sephiroth was slowly built up in the PS1 version of FF7 until his major appearances in the story, he has been featured much earlier in the multi-game Remake project arc which this source material has now been adapted into. Now that Final Fantasy 7 Rebirth has already showcased a powerful transformed version of Sephiroth which would have originally been relegated to final boss status, it's unknown how Square Enix will manage to further elevate the stakes of the next remake installment's conclusion.