Xander:
You say "making a character something they aren't" but that's what Zidane was. The way he acted to Steiner was part of his "cheeky" if you like, character.
Squall wearing a tutu wouldn't be part of his character, obviously but Zidane being rude to Steiner was his personality. I don't really see what your getting at... (no offence intended!)
People were suggestion humour as an excuse for Zidane acting like he did. His character being arrogant and disrespectful isn't justified by it being "The way he is" either.

How do you think the story would have gone if Zidane didn't act like that? If he didn't kidnap Garnet...it was the starting point for the whole game, it had to be done, Zidane had to be like he was. It was what made him Zidane. And I liked him that way
Dagger had to come with them, but it didn't have to happen like that. She had intended to sneak on the ship, and could have done so without them trying to kidnap her.
Or alternatively and more sensibly, Zidane could have actually explained his actions himself, or it could have been indicated that he even knew the real reason for the abduction. He also could have shown more respect for someone who was only doing their job, and given him a reason not to think he was just a thieving, kidnapping, (possibly) rapist.