Since Terra changes colors and flew around naked, Cloud cross dresses, Squall likes pain (doesn't he get beat up a lot in the game? been a while since I played) and Zidane has a tail and resembles a woman, I would have to say....
Tidus.
Emotionally-wise, I would say all of them. I mean, I would react the same way in just about all of the situations that these characters have been through.

Word to your mother.