Occidental versions (American, english, French, etc...) : There is two boss with hammers. One is brown and the second is purple.
Japanese version : The first version have hammers and is brown (same as the occidental versions). The second one have a chainsaw and is purple.
I'm actually looking if I can easily do an english version of my patch (so with the VWF, the censured boss, the added dialog, the original earthquake's magic sprite).
I also know DarknessSavior wants to make a retranslation, still waiting for his new intro to finalize the tools but meanwhile, it could be a good thing to wait until the retranslation is done.