Shadow Sora

The Shadow Sora (シャドウソラ) is a Pureblood Heartless that is found in Kingdom Hearts.

Kingdom Hearts
Sora and his friends encounter Riku on Captain Hook's ship, where he reveals that he now has control over the Heartless. To prove it, he creates a Heartless replica of Sora before their eyes, and it throws them into the ship's brig. As Sora fights his way back to the ship's deck, he encounters many of these Shadow Sora's, which only he can defeat. However, they have no weapons and often vanish before he can even attack them. Once Sora reaches the Captain's Cabin, Riku creates a more complete replica of Sora, this one able to wield a shadowy Keyblade. After being defeated, it fades back into darkness, and the other Shadow Sora's are no longer seen.

They are identical to Sora in appearance, but fight without the Keyblade and are very easy to defeat.

Trivia

 * Shadow Sora is one of only eight enemies who do not have entries in Jiminy's Journal. The others are AntiSora, Bit Sniper, the Cave of Wonders Guardian, Chernabog, the Crank Tower, Glut, and World of Chaos.
 * In the way that they fight without the Keyblade and their appearance, they are similar to Sora's Anti Form.