This article is to be about the real life of Greg Hill. For the literary persona of Greg Hill, see Malaclypse The Younger.

Greg Hill (a.k.a. Gregory Hill, Malaclypse the Younger, Mal-2) wrote the Principia Discordia with Kerry Thornley (a.k.a. Omar Ravenhurst ). Some people believe Gregory Hill is a pen name for Robert Anton Wilson, co-author of the Illuminatus! Trilogy with Robert Shea, which involves Discordianism to a great degree.