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The Experiment No. 123 is an enemy in Crisis Core -Final Fantasy VII-. He looks just like Zack after obtaining the Buster Sword.



This impostor is a tough foe to defeat. He has sky high HP, and can cast Regen on himself and use a Phoenix Down for his own benefit. He can heal for roughly 24,000 points of HP every 5 seconds, and will use Exploder Blade or Energy to attack.


The player should barrage Graviga to deplete the Experiment's HP, then attack with a series of Costly Punch. Flare and Ultima are effective, as they are area-effective magic. Timing matters for attacking and defending. The player can equip a Protect Ring to mitigate damage.

On Hard mode, Experiment No. 123 regenerates 37,000 points of HP every 5 seconds. Having Dispel or the Endure status is recommended.

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