Lumpy is a supporting antagonist of the Christmas comedy-horror film Krampus and is portrayed by computer-generated graphics. He is a psychotic, giggling gingerbread man who attempts to kill Howard, but is later defeated by him.
Lumpy, just like his partners, is highly psychotic and constantly giggling. He obviously finds joy and excitement in attacking people that are scared. He is apparently teached how to shoot a nail gun in Behind The Scenes like Dumpy and Clumpy