I'm at my Gran's house right now so there's nothing to do, really. I'll try making the evil mob skin.
Also, where's the server link? I was thinking of joining but this PC is like "GNNNNN" with Minecraft (AND has a slow internet connection) so I might not be able to be of any use (that is, if it can load the server).
Edit: "Evil" is such a vague adjective. Can you elaborate what this evil guy is supposed to be like?
Okay, I have no idea what I'm doing with this skin, but I am trying. I expect that my skin won't make the cut if I make it alone. I'll share what I have done with the skin and then we can all edit it a bit so that it looks perfect.
So far I've recoloured the trousers dark red, recoloured the eyes so that they're monochrome and dark, and I've made him bald. I've really bad with pixel shading so I will need a reference of a bald guy! Off to Google Image Search I go.