Tales of Symphonia - Boss: Zelos (Mania Mode)

*PLEASE READ THE VIDEO DESCRIPTION* *SPOILERS?* hahahaha replaying this game, I just noticed how obvious were the hints the game gives you to tell you Zelos was going to betray you. Anyway, if you talk with Kratos in Flanoir you will trigger this battle, if you do so you will kill Zelos and Kratos will join your final party (take in mind this is not the canon). If you don't talk with Kratos then Zelos will betray you (not battle you) and then rejoin your final party (but Kratos don't join) ...