Koopalings Custom rpg sprite

[Vipershark]

That's better than before, but still not right.
The body now has no shading whatsoever so you'll need to fix that.
You can also further optimize your colors by hue shifting the darkest shade of blue on the hair to green and using the hue shifted blue/green both for the hair and the green part of the head since that pixel cluster is so small.
You can also probably combine the dark grey and the black into a single darker grey shade.

The hair is also still pillow shaded so you'll need to fix that as well.