Re:Mind DLC - How to beat Terra-Xehanort data and force him to skip his powerful guardian summon attacks. Thundaga will be pretty useful here. You should also disable most or all of your flowmotion attacks/actions except maybe for buzz saw ability. Airstep and blocking will be very useful here. Once his HP goes down to half, he will transform the field and summon his guardian. Fortunately you can cancel this out by damaging him enought with the Ultima's ultimate form. The hardest part of this battle will be dodging the red aura keyblade attacks.
* I am using Ultima keyblade and I am level 99 here by the way. You need a lot of finesse to defeat Re:Mind DLC secret bosses.
Terra-Xehanort, also known simply as Xehanort, is Master Xehanort possessing Terra's body in order to acquire a new younger vessel for his heart. He is the complete self of Ansem and Xemnas, as well as Rank IX of the real Organization XIII.
Source: https://kingdomhearts.fandom.com/wiki/Terra-Xehanort
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