Just from videos? Fast, but not foot-wise. His drive can pull him towards his enemy or knock his enemy away, along with doing damage. From what I've seen in Zakiyama vids, his biggest strength comes from his air combos (relentless onslaughts of knife blows aided and abetted by his drive) and his distortion drive Jayoku Houtenjin (Very useful under pressure, invincible on start-up, and, unless its IB'd, you're almost assured to knock your enemy sky high). I'm probably doing him little justice here, but that's the basics so far.