when i first saw his name i thought it was pronounced like "Tee-dus"... i think someone said (on arround page 3 i think?? i dunno y i was reading all of this... lol) that you can choose what you named Tidus. i dont rmember this, but i havnt played FFX from the begining in a LONG time so.. yea. if you can pick what you name him, then it makes sense that they just call Tidus "him" through both games. and i thought this whole thing was solved in KH1 when wakka called him "Tee-dus", and then in KH2, selphie called him "Tie-dus". but if you think about this WAY too much (like i am going to do right now...), you realize that selphie is from an older FF game that Tidus wasnt in, and probably doesnt know what his name really is. and wakka is from the same game that Tidus is in. so, for this reason, i think his name is pronounced "Tee-dus". again, i know i thought WAYYYY out of the box here but... yea. sooo, that is my take on the whole "Tee-dus" vs. "Tie-dus" thing.