Other humans often dislike Al Bheds because of their use of machina (machines) and their open disapproval of Yevon (the main religion of the games). Al Bheds also speak thier own language, also called al bhed. It is a substitution language.. meaning one letter is substituted for another. For instance, the al bhed "a" would equal the english "e".
english: "What are you saying?"
al bhed: E's dra pekkacd tung eh dra funmt palyica E ica y myhkiyka syta vun y vyhdyco jetau kysa. E kad hu bmyo.