Opposite Armor

The Opposite Armor (オポジットアーマー) is an Emblem Heartless that is found in Kingdom Hearts. It is one of the bosses at Traverse Town. The various pieces of the Opposite Armor, known as "Armored Torso", "Gauntlets", and "Hammerlegs", are able to move independently.

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

Kingdom Hearts
After sealing the Keyhole in Deep Jungle, Sora returns to Traverse Town and tests the legend about the Second District bell by ringing it three times, revealing the world's Keyhole within the district's fountain. However, as the group goes to seal it they are attacked by a Guard Armor, and though they defeat it, it transforms itself into the stronger Opposite Armor and attacks again. After it is destroyed, they are able to seal Traverse Town's Keyhole.

A second Opposite Armor appears in the Hades Cup.

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.

After you defeat the Opposite Armor, you receive new spell, Aero, and another Navi-G Piece.