Ok have noticed some people stating that the keyblade is an element of light. Well this is something that I think needs to be addressed. The keyblade is not light or dark. The Keyblade Choses the one person with the strongest heart. Wether they be light or dark it doesnt matter. The keyblade was able to be weilded by Riku at the end of Kingdom Hearts, and Riku at that point was almost compleatly immersed into Darkness. The Keyblade can go to anyone. All it takes is a strong heart for you to be able to comand it. So therefore the Keyblade is neather light nor dark, it is a tool of the heart.