Detail this asset from Unity Store: Original Link
This is a paid asset, but now you can download Creatures Pixel Art Pack Free.
Creatures Pixel Art Pack v1.0
Pack with different 2D animated characters. The pack contains (19 different heads, 6 bodies, 2 shields and 1 sword), also the pack includes some sample scripts to animate and move characters.
-Attack and Shield_Mode.
-Stop (animation is activated after 1 second in stopped mode).
The pack also includes a folder with independent parts for use in different layers if you want. (example: Layer1 head, Layer2 body, etc… )
To see the animations: Click here