With the update coming at the end of this month (December, 2011) we will be introducing a new monster (among many other features and updates). Here is a video of the new "Rock Monster" in action!
At first glance, the "Rock Monster" will appear to be a chunk of Stone that can be harvested, but when you get close that's when he leaps out at you...
The vid has damaged proprtions. I can't view it.
Someone's played Commander Keen 4, am I right?