The VG Resource

(I hope this is where I post this)
Quick Question,
what is the legality of using sprites from pirate games?

Do the same laws as custom sprites apply?

I was wanting to do something with this:
http://spriters-resource.com/nes/mariowo...heet/35642

you could easily report the thread if you see it not being posted on the right place, so a mod would move it.