Shadow Bandit Jax
Just a quick n' dirty recolor. Also, I got rid of his odd mask (I know, I know, it's pretty much Jax's signature, but I don't care ;) and gave him badly done glowing demon eyes.
Note: Requires the Vandal Jax skin to be loaded, since it uses its model.
The directory in your LoL folder is /Game/Data/Characters/Armsmaster/ .