Gas-O raps at the beginning of her song, I think. 2Bad is used in Heat's stage. Natural Playboy is Hiro's song. He's sort of cute, but not really. Power is Strike's song.
Strike is a convicted bank robber.
It's Gangsta Rap, I guess. Pretty good, but hard to understand what he's saying. I took a stab at it, though, on my Lyrics page . They're identical twin aliens. Flyin' To Your Soul is Robo Z's song.