[Illuminated One]

Well, apart from being quite powerful several forms just feels a bit mechanical and unbelievable to me.

I mean "Puny mortal do you think that beheading me serves any purpose? I'll grow two heads instead!" is perfectly ok.
But "Puny mortal do you think that dispersing me into atoms/petrifying me/slaying my soul serves any purpose? I'll just grow a new standard werewolf form instead with all the items I had before!" ... like atoms would talk.

edit: something like the oni have with a ghost form is pretty cool imo though.