Kingdom Key DΩ

Kingdom Key DΩ (lit. Kingdom Key D Omega) is a more powerful form of the Kingdom Key D utilized by King Mickey in Kingdom Hearts 358/2 Days. It can be equipped via the Zero Gear.

Trivia

 * The Kingdom Key DΩ, like all secret characters' Zero Gear weapons, is not its wielder's main weapon. In King Mickey's case, his main weapon is the Kingdom Key D, which is accessed through every Gear except the Pandora Gear and Zero Gear.
 * The "Ω" in this Keyblade's name is "Omega", the last letter of the Greek alphabet.