Sora741, could you give a link to the theory?
and
for everyone who is saying it's just a badass weapon riku had or that it was from the darkness in his heart, think back to the 2ND form of Souleater. Two people have used it. The first was Riku. The second, and this is what people forgot, ANSEM(Xehanort's Heartless) used it as well. Anyone remember the staff with a Souleater on each end?
This brings me to another point about Riku and Ansem. Using a Keyblade depends on the spirit/heart of a person, correct? Well, if you think about, Ansem(XH) used a Keyblade. He may have been in Riku's body, but it was his soul/spirit/heart that was weilding the Unlocking Keyblade. Just a guess, but I'm sure that would put Ansem(XH) as a Keyblader. It only makes sense, if a Nobody can use a Keyblade, why can't a Heartless?
and
for everyone who is saying it's just a badass weapon riku had or that it was from the darkness in his heart, think back to the 2ND form of Souleater. Two people have used it. The first was Riku. The second, and this is what people forgot, ANSEM(Xehanort's Heartless) used it as well. Anyone remember the staff with a Souleater on each end?
This brings me to another point about Riku and Ansem. Using a Keyblade depends on the spirit/heart of a person, correct? Well, if you think about, Ansem(XH) used a Keyblade. He may have been in Riku's body, but it was his soul/spirit/heart that was weilding the Unlocking Keyblade. Just a guess, but I'm sure that would put Ansem(XH) as a Keyblader. It only makes sense, if a Nobody can use a Keyblade, why can't a Heartless?