Only characters in the Zombie status can have 0 HP. They are immune to most attacks, and must be healed with Holy Water. Most offensive attacks target HP. Monsters usually disappear from the battlefield when their HP reach zero. In Final Fantasy XII and Final Fantasy Tactics, Armor increases HP. The HP Boost ability of Final Fantasy Tactics also increases HP. Certain equipment in Final Fantasy VI can increase HP; for example the Muscle Belt which increases HP by 50%. The HP Plus Independent Materia from Final Fantasy VII performs a similar function.