The Experiment No. 116 is an enemy in Crisis Core -Final Fantasy VII-. This enemy has a huge amount of HP, but Zack can deplete it with a couple of Graviga attacks with Brutal equipped. Keep on using Graviga until its HP is around 100,000 points or so, then attack it with strong Command materia or Hell Thundaga. Costly Punch paired with Break Damage Limit is also very effective.