I actually disagree Re: the scratches, I think they look fine how they are, with one exception. The vertical scratch near his elbow really stands out, it should be made less obvious or removed entirely I think.
Main issue I see is that Quote's face is kind of wide. I know the original sprite is quite wide, but the chubby face in your version doesn't look like it belongs on the athletic body he has.
His expression is also a bit off. He looks sort of... amused but uncomfortable? I'm struggling to describe it, but it definitely creeps me out.