Thanks for the nice sprite.

I have used them for the protagonist of my free (but awful) Android game Awful Ninja Game. 

Since I only use CC0 assets I did only generally give credits to opengameart.com.

Additionally I have customized the image and added some animations and stuff, the size of each sprite is 40x40.

They are not as good as your stuff, but perhaps somebody has a use for them (all  CC0 of course).

dead:

dead and bleed:

hit:

idle:

joy:

panic:

rage:

woman: