I'm carrying on what you yourself began, and I'm creating a brand new world, one heart at a time.
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Zack appears as a boss in both Aqua and Terra's storyline, fought at the Olympus Coliseum.

Video

<youtube>http://www.youtube.com/watch?v=m0oHM6P4MzQ</youtube> <youtube>http://www.youtube.com/watch?v=tEYbtX2B8tE</youtube>