The Nefarious Four is a team of comic book supervillains in the Belch Dimension Comics universe. They are adversaries of the Treehouse Warriors. The members are Demi-Jon, Captain Maggot, Dr. Ichabod P. Freely, and Dung Tung Wu. Their sponsor and chief is the villianous Hiss Hole. They first appeared as a team in Belch Dimension #37, though all the members have appeared separately in previous issues.