Hibiki is 26 or 27, although all he does is lurk lately. Cheeseman is 34 IIRC.
I have posted pics of Maya in the past, but they've been misappropriated by 10 year olds with vendettas, so I'll not be posting them here again. As for Mephit, she's specifically asked me never to post her picture. A few of the Eternal Rage guys have seen her though, like Magus.