Yuna and Zidane are great picks, both represent some of the best character development in the series. Yuna's evolution from a hopeful summoner to someone who actively challenges her fate is incredibly impactful, especially that moment during her sending; it really drives home her inner strength.
As for Zidane, his journey in FFIX touches on themes of belonging and sacrifice, which is a big part of what makes that game resonate with so many. I also think about how he brings the group together; I loved seeing a carefree character evolve into a leader who truly cares for his friends.
For me, another standout arc is Balthier from FFXII. His charm and bravado mask a deeper desire for connection and identity, which makes his ultimate sacrifice all the more poignant. What do you think about Balthier's role in FF12? Did you find his arc compelling?