C+C

[Cobalt Blue]

they have quite an awful lineart. jaggs everywhere, and overall the palette is quite weak in terms of contrast. the black outline eats any kind of detail you wanted to put on them(protip: avoid using a pure black outline on such small sprites for the same reason), not to mention it remarks the poor and unconsistent anatomy all those chacaters have. the guy on the bottom specially has several problems in terms of shading, and i am still trying to figure what do you understand for "blurry" and "fast". i see no motion effect on that guy, all i see is an attemp(?) of outer AntiAliasing that doesnt AA anything. overall, they're bad, but its nothign you couldn't fix w/o having to redraw them from scratch.