AntiSora

The AntiSora (アンチソラ) is an enemy that is found in Kingdom Hearts. It is one of the bosses at Neverland.

Kingdom Hearts
Sora encounters Riku on Captain Hook's ship, where he reveals that he now has control over the Heartless and has picked up "a few other tricks as well". With this sentiment, he gives Sora's shadow life before their eyes, and it throws Sora into the ship's brig. As Sora fights his way back to the ship's deck, he encounters his shadow many times, which only Sora can defeat. However, it has no weapons and often vanishes before Sora even attacks it. Once Sora reaches the Captain's Cabin, Riku uses the shadow to cover his escape. The shadow then possesses a shadow replica of the Keyblade. Sora eventually defeats it, and it fades back into darkness.

Strategy
Unlike Sora, the AntiSora is unable to use magic, but can instead transform into a flat shadow and move about in that state. It can deal a lot of damage if Sora is caught when it leaps back out of the ground. So be sure to keep in motion to help reduce the damage when he reappears. After half of its HP is depleted, AntiSora creates replicas of itself to distract you, so use the scan ability to help speed things up a little bit. Make sure you have good health.

Trivia

 * AntiSora is one of few characters who do not have entries in Jiminy's Journal.