Hey there Ninjafro. What perspective projection are you using? Iso, oblique, etc?
To me, he looks like he has brown lines painted on him. Why the extreme muscle definition contrast? I understand it's your "style", but it doesn't prevent it from looking odd.
Your chosen method of defining muscles relies too much on linework and not volumes - try using shadows and highlights to convey muscular forms on his body instead.
Feet of frontal sprite are nearly at 90°, feet of rear sprite are like 10°. Front's right fist should reach lower, to rest on thigh like left.
Helping you with animation is more feasible if you at least post your animation WIP.
