Χ-blade

Unreleased Vanitas's X-Blade is a Keyblade used by Vanitas in the Kingdom Hearts prequel, Kingdom Hearts Birth by Sleep.

Appearance
The X-blade appears to be made up of two crossing Kingdom Keys. It has a filigree that slightly resembles one on the Ultima Weapon, and the blade slightly resembles the Dream Sword.

The keychain is a black and red heart (similer to the Heartless symbol, only without the fleur-de-lis botton and jagged cross) with two Kingdom Keys crossed over it. The chain starts out as two seperate chains that form into one.