Zeromus

Zemus

Golbez and Fusoya will defeat him. After that he will turn into Zeromus.

   Zeromus (1st form)

Golbez and Fusoya try to beat him, but he kills them with Meteo.

Golbez will give Cecil a Crystal for him to use on Zeromus. Do so and Zeromus will show his true colors.

  Zeromus (last form)  Hp : 105 000  Weaknesses : None

Have Cecil attack, Edge should throw the Spoon Dagger and Ninja stars afterwards, Rydia should call Bahamut, Kain jump while Rosa casts Cure4 or Life2. Zeromus uses Big Bang (2000+ damage to everyone), Virus, Black Hole and Meteo. When he gets weak, he'll start using Meteo but don't worry, it won't do more than 1000 damage to one member in the least. Just stay healed during the fight and you should win.