Patapim/Leaf Golem

This mob can be spawned by placing a carved pumpkin above a leaf block of any kind, it's colors would be of the trees from which you used the leaves to spawn it, it would have a big nose and big feet, but small legs, a leaf beard etc. It would attack any hostile mob, by growing root blocks around and stopping them, after a few seconds the roots will break, this mob can also spawn naturally in most villages.