Yet another Minecraft creeper model, because there isn't enough of them on here :)
I didn't like the overhang artifacts on the faces of the one-piece models on here, so I threw this one together, which prints as two separate pieces for better finished quality. Print the head (creeper_head.stl) face-up, and print the body (creeper_body.stl) upright. Then glue the two pieces together.
The design is scaled so that 1 "minecraft pixel" (is that the right word?) is 1mm, so you'll probably want to scale it up for printing. As shown on my print bed here, they were scaled 300x.
OpenSCAD design files are attached if you want to mess with the design. Enjoy!