X-Blade

The X-Blade is one of the primary materials and weapons of the Square Enix 's video game series, Kingdom Hearts. The first said legendary keyblade weapon, from which all of the other keyblade weapons are forged, the X-Blade is created with the combination of 7 lights and 13 darknesses, resulting in 20 fragments of the material. It is also re-created, temporary, by the union of Ventus and Vanitas, before Ventus' sacrifice, that destroyed the keyblade. Though, not featured in the villain wars at all, it was planned to appear in the third Disney Villains War, as one of the prime materials, that it would release the Great Evil, before the series cancellation.