Opposite Armor

The Opposite Armor is a boss from Kingdom Hearts. When Sora and friends had found the Keyhole in Traverse Town, the only thing standing between them was a second Guard Armor. Upon defeating it, it turned upside down, becoming Opposite Armor. Opposite Armor, along with Guard Armor, is the boss of Traverse Town.

There is also an Opposite Armor in the Hades Cup in Olympus Coliseum that fights with Darkballs.

Journal Entry
''Heartless that guards the keyhole in Traverse Town. It is a modified form of Guard Armor, but is more powerful.''

Strategy
To begin with, this battle will be reminiscent of your first boss battle in Traverse Town with Guard Armor, mostly because it will be exactly the same. However, once it's health bar reaches a certain point, the body parts will completely collapse and rearrange themselves to form an even nastier opponent.

Opposite Armor uses all of Guard Armor's tricks, so you should be familiar with the spinning and stomping attacks. Avoid them, and attack during the cooldown period. Begin by taking out the Gauntlets, as they have the least HP and by doing so, will reduce the amount of stress considerably, followed by the Hammerlegs. Once all that remains is the torso, it will frequently execute a bazooka-esque attack. Avoid this using Dodge Roll and quickly perform an aerial combo. The torso will then attempt to escape, so make sure you follow it, or avoiding the attack will be difficult. Keep avoiding and attacking, and your enemy will eventually fall.

Victory will net you a new spell, Aero, and another Navi-G Piece.