Zidane...

[Roserashi]

How old who is? if you're talking about the cast of characters then you find out that Dagger is 16 starting out and Zidane is 17 supposedly, with Steiner being in the 30 range, and Amarant I think, with freya in 20's, Eiko's 6, and Vivi's 9.

Garnet: 16 (Although if I remember correctly, the game start soon after, if not THE day of her 16th birthday)
Zidane: 16
Amarant: 26
Freya: 21
Quina: ???
Vivi: 9
Eiko: 6
Steiner: 33

[Suvious]

Well Zidane didn't cry when Garnet played "Make pizza on the pavement by jumping from this castle" why would he cry now? Oooh I know! Maybe he had water casted on him and made him look like he was crying! xD
Is it me or is it vaguely creepy that Square decided to make two characters under ten years old? Doesn't it seem like they fantasize about children being used as fighting machines? Creepy..