The Critical Bug is an enemy in Final Fantasy X-2. A strong enemy that appears very late in the game. When Oversouled, it is best to quickly kill it before it attacks, as it can target nearly any dressphere with its Hater and Payback abilities. Inflicting Poison is an ideal start to the fight, as well as using a Light Curtain to reduce the damage of its physical attacks. Having several Mega-Potions and Phoenix Downs is advisable.