Fujisaki is a little bitchy keyboardist. It's kind of easy to see and tell.

Joshua is a crazy angel-demon thing with a mega sister complex.

Kizna is human but from the distant future in outer space, etc. She's basically. . . A sweet girl with a big attitude?

Miyako-- Oh, you know this already.

Takemoto is. . . He's a deep thinker so lots could be going on in his mind and very emotional, but he plays false with them a lot. He's not excessively creative, but he is an artist.