Emerald Weapon

Emerald Weapon is a superboss in the North American, PAL and International versions of Final Fantasy VII, and one of the toughest of the five Weapons (the others are Ultimate, Diamond, Ruby, and the non-battled Sapphire). Emerald Weapon is released when Sephiroth summons Meteor; Weapons are awakened when the Planet is under grave threat, to work as its protectors. Emerald Weapon is one of the two superbosses in the game, along with Ruby Weapon.

Emerald Weapon is located at the Bottom of the Sea, accessible by the submarine. A battle will ensue after making physical contact, although it is possible to avoid him by piloting the sub at its maximum height.

Defeating Emerald Weapon in the PC version re-release of Final Fantasy VII unlocks the Emerald Weapon achievement. Doing so in the PlayStation 4 version earns the Emerald Eviscerator trophy.