Ahah, Syunta-san does enjoy Goro a lot too ;).
I think Goro would be like Jeane from Suikoden 2...very sexy, very naughty, basically the development "pet"...if You want another cameo it would be Wulfric from Small on Top, the "so called powerbottom"...
Small on Top by Speedumon...I sense that Wulfric can have a human incarnation...