Toy Name - childhood memories?

When I was a kid, I had a toy zombie action figure. It was mostly green, with the body and limbs made of hard plastic. The interesting part was the head, which was like a rubber bounce ball, which you could load onto the body and launch by pushing a button, I think on his back. I'm pretty sure they also made a mummy, and maybe others, like a vampire. Does anyone remember what these were called?