EDIT: All decent - good sprites will be updated in this post for easy viewing, the bad one will go hide o.o;
You can use them in your Signature, but you MUST give credit.
You may NOT use any sprites for your own spriting/mixing projects.
My Very random ones I have as Adoptions..(these range from mix/scratch/edits/recolor/re-element...) that have been adopted on C Spriting
Spirits of Pokemons:
The Ofiicial Art/Pixel Art:
Torouze Sprites Revamp:
The Fakes can be see at my Fake Dex, link is in my signature