Giant's Head is an enemy in Final Fantasy IV: The After Years exclusive to Final Fantasy IV: The Complete Collection. It is part of the superboss Lost Babil, and is faced in the first part of the battle alongside Giant's Left Arm and Giant's Chest.
The Head uses Holy and status attacks like Venomous Gas and Bad Breath. If the Chest is killed the Head may begin to use Holy and Laser several times a turn, so the Head should be targeted first. Destroying the Head begins a chain reaction that destroys the Chest and Left Arm.