Here's my contest submission "Tarpator". Basically, it's a creature who hides amongst the rocks in caves to hunt its prey(players in this case). It will take on the color of the common stone in the planets that it inhabits. It will remain completely still while it waits for its prey, then when the target is within range, it will jump out and attempt to slay the target with its two blade-shaped claws. Its basic design allows for easy change of skin appearance and claw shape allowing for a decent variety.
Wow, I like it, Cellbind. It isn't even bad artwork xD It looks pretty awesome and I'd love to meet one of those in-game. Though I'll probably be sliced pretty quickly... Well, I doubt they can kill this zombie ; ) Good luck!