Nope haven't been able to beat him in KH 1 or 2. Although i did finally beat him in FF7 like four years ago and i've kicked his ass in dissidia pleanty of times muhahaha
The problem in KH i found is his sword is ridiculasly long so his attacks are really really hard to dodge. Keep pleanty of elixers in stock cause one of his attacks leaves you with 1hp/1mp and good luck
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... yeah i know there's a typo I'll fix it later