At the moment, my light elemental is Lv50 and "extrememly tame and extremely aggressive." I wanted to change him to "extremely defensive," so I made him the champ and spammed "Guard! Block! Parry! Hold!" for about 15 matches in a row, but when I checked back at the NPC, my elemental was still "extrememly aggressive."
Has anyone come up with how to effectively change your monster's temperments? It doesn't seem like simply spamming is the answer.
XI Wiki

