Kingdom Key

The most prominent and famous Keyblade is the Kingdom Key. It represents Disney Castle in all Kingdom Hearts games. The key chain (the Mickey Mouse insignia) attached draws out the Keyblade's true form and power.

Sora obtained the Kingdom Key during the destruction of the Destiny Islands. Mickey Mouse uses a similar weapon (the Kingdom Key with a gold handle and silver blade rather than vice versa), but how he obtained it is not known (from some comments of DiZ in Kingdom Hearts 2 it is thought that his Keyblade is that of the dark realm and he found it during his time there).

Kingdom Hearts

 * Attack: 3
 * Magic: 0

Kingdom Hearts 2

 * Attack: 1
 * Magic: 1
 * Ability: Defender
 * Effect: Defense up in a pinch