Ahh yes of course, it is gasuto (my mistake), however, this translates to Gust. It could also be Gusto from the restaurant

™‹„‚‰ƒく - Wikipedia



His second name is an anagram of one. ファミレス Family Restaurant



Also, Heidegger is Heidekker (this has just been told to me by a Japanese friend). FF7 uses K and not G to distinguish between Martin Heidegger.