Alright dev, the premise is good - but you REALLY should rework the MCs face. He looks like a retard in every single scene.
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If hes supposed to be a fighter whos taken a lot of hits, he should have heavier features, like a brick jaw, heavy brow ridges, heavy cheekbones, and a wide/crooked nose. Maybe some couiflower ears, but that might be hard to animate.
Right now he looks like a retarded child in a mans body - at least give him a beard to cover up his soft goofy face.
Also, make his eyes smaller - they are way too large, like an anime characters.