Yu Yevon is technically the last boss but you have auto-life for some ungodly known reason... even though the aeons can actually kick your arse so bad you would never win the fight. *ponders* that's probably why but Yu Yevon is the final boss... cause he's the last boss. Jecht was PART of the last boss. he was posessed by Yu Yevon thus MAKING SIN. wOOt!