There's definitely some fun to be had with Pheme and Achilles! Especially with the MIB shenanigans on the horizon. ;)
I like Hide for J-Rock, but I see what you're saying. Is there maybe a PB you could go with that has a more diverse/changeable look - ie, colourful in some pictures, more goth-looking in others? It might be worth looking around. Otherwise, I'm open to the his having an alternative PB, provided there's some reason for him to be changing his form completely. But that's definitely something we can discuss if it comes to that.