"Then why are you looking for the other parts of the corpse?"
To be fair, Johnny definitely falls on the more villainous side of obtaining the corpse. On the one hand, we have Funny Valentine, with his "I want to collect all the parts of the corpse to safeguard the country that I love", and on the other you have Johnny's "fuck that guy imma take all the corpse parts because I wanna".
That definitely was not a guy.
"It's like a ripple."
It most certainly is.