Oh goodness, the chainsaw majini drove me nuts. They were so much harder than Dr. Salvador, not fun at all.
I didn't like any of them in particular (not too fond of things that are trying to kill me), but I especially disliked the big guys with the dogs. Particularly because I'm a bit of an animal rights activist, and unfortunetly this has subconsciously extended to the virtual world. Therefore, I refused to kill the dogs, lmao. Yes, I'm retarded, I know. So my friend had to take care of that part by himself.
Well, I guess the military majini were kind of cool though. Not really REish but they were okay.