It's pronounced with a K sound so either spelling is acceptable.

Let's see, what can I remember... Doomgaze was Deathgaze, Elaine and Owain had Japanese names, Kefka swore like a drunken sailor, the "Book of Secrets" was porn, Blitzes were called... I don't remember. Something else. Oh, and every character had a job under their name in the status screen. There's more, but that's all that's jumping into my head.