Well, I've always seen Gojyo as the drummer and Goku as the insane lead guitarist that ends up smashing his guitar and stuff, mostly because it's easier to draw him doing some bizarre leap into the air with a guitar... it could work the other way ... Damn you for opening my mind to other possibilities!

Sanzo is, of course, the emo lead singer with a bottle of Jack Daniels and a cigarette onstage.