This will be the thread I use to post my sprites on MG from now on.

I freehanded a sprite of Urban Champion from the NES classic Urban Champion, based on what he'd look like if he showed up in SSF2. It's a work in progress, but I think it looks good for a start.
Original: My sprite:
This is an 8-bit sprite of Grey Fox from Metal Gear Solid: Twin Snakes.

And finally, here's a series of 8-bit sprites I made of a few Marvel and DC Comic characters.

Cool, tough I think you should make the sprites change when making an idling animation instead of reusing the same pose.
Otherwise, looks good.

The main problem is that he's too small;

Also, like Niayre said, all the stances have almost the same animation

I like that Urban Champion sprite, but I think it would be better if you sprite him in a fighting pose

It was kind of a formula I was working with. I wanted to test out how different body positions would work with the same animation cycle.