I did a quick and nasty edit off your sprite.

The two main things I did, was alter his face a little. I changed around the shadowing and the placement of the mouth to try to make him look more serious. And I made is feet thicker, to me they just looked so puny. Obviously it's intentional on some level. I just think it looks better with thicker feet on this guy. The other stuff is mainly me fooling around. The cape, can it be more overdone?

I also added bandages (though I dunno if it shows) on both his upper arms, added some red stuff on the armor. Added a shine on the blade.
EDIT// Couldn't resist fiddling around with your character even more


Noticed just now that you either need to change the ear antennae or remove it completely. It lines up with the swords edge too much.