First band to use corpse paint

God damn it, I was going to say Kiss as soon as I saw the title. :)

I'm kinda thinking it was Sarcofago?
 
Well, since you knocked down the option of Kiss...

You're no fun! :D

I'd have to go with King Diamond. He was the first person to use black and white makeup to look like a corpse.
 
Corpse paint is simply the inverse of this:

vcvg57.jpg
 
If I remember rightly, Dead from Mayhem popularized the corpse paint look. Whether he was the first, I don't know, but he did make it more common.
 
King Diamond actually looks cool,has a design. Black metal bands look like a bunch of retards that slopped shit on their faces.