WEC 5: Halloween Fury was a mixed martial arts event held on October 18th, 2002 at The Palace Casino in Lemoore, California. WEC 5's main event was a title fight between Cole Escovedo and Philip Perez.

WEC 17: Halloween Fury 4 was a mixed martial arts event promoted by World Extreme Cagefighting on October 14, 2005 at the Tachi Palace Hotel & Casino in Lemoore, California. A light heavyweight tournament was held with the winner being crowned the champion and given a deal with the UFC.