Heartless Sora?
When you change into a drive mode sometimes sora turns into a really powerfull dark shadow for a while. Just wondered why seeing as the game gives nothing away.
"marmite" love me or hate me :p
It's called Anti-Form
http://kingdomhearts.wikia.com/wiki/Anti_Form
To tell the truth, it's one of my favorites of the Drive Forms.
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