Kingdom Key D

The alternate version of the Kingdom Key, Mickey's Kingdom Key was found in the Realm of Darkness. Since this keyblade is a reverse colorization of the Sora's and that they have the same name, it is believed that these two are the original keyblades. It wasn't the King's since before Kingdom Hearts. In fact, His original keyblade was the Star Seeker (As shown with Mickey wielding it in Birth By Sleep) when he was still an apprentice. This Keyblade was shown in the secret ending of Kingdom Hearts II called "Sunset Horizon" with Sora's and Riku's Way to the Dawn as being the only 3 with keychains on them, showing that they are genuine. In Kingdom Hearts II, he is not shown wielding any weapon, except Mickey's Kingdom Key and his hilarious wits in Timeless River.