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Hundred Gunner is a boss battle from Final Fantasy VII that you encounter at Shinra Headquarters in Midgar.

Stats

Weakness: Lightning

Half Damage: Gravity

Attacks: Main Artillery, Wave Artillery, Aux Artillery, Hidden Artillery

Protected Against: Death, Sleep, Poison, Sadness, Fury, Confusion, Silence, Frog, Small, Slowly Stone, Petrify, Death Sentence, Manipulate, Berserk, Slow, Stop, Paralyze, Darkness

Strategy

Hundred Gunner is a fight where physical attacks are out of the question. The only person who should use physical attacks is Barrett, due to his long-range weapon. Red XIII can deal damage with limit breaks, but it's best to stick with magic and items. As for Aeris, when she has the opportunity to use a limit break, use Healing Wind to keep the party up. Have either Red or Aeris use the Bolt magic consistently, while the other remains on standby to use a healing item when necessary.

After taking a significant amount of damage, Hundred Gunner will be defeated, and a Heli Gunner will come down in its place. Use the same strategy as you did for Hundred Gunner, but you'll be healing much more often. The Restore+All materia combo will come in handy in this part of the fight.

See Also: Bosses (FFVII) or Heli Gunner