The Umbilical is a supremely powerful, ancient entity that rules over the infernal dimension known as Fester and all the Lepers that inhabit it. Not much is known about it besides the fact it is so enormous that it supposedly acts as the "ceiling" of the entire dimension. Described as the oldest living Leper in existence, The Umbilical is easily the most dangerous being in all of Fester but rarely interacts with humans. It most likely originated from Subfester, a pocket dimension underneath the ground of Fester filled with horrific creatures just as powerful as it. It might also be connected to The Hand, an equally mysterious being.