Demons Primary LogoDemons Alternate LogoDemons Wordmark LogoEstablished 1999 City San Francisco Demons League History 2001 / XFL Team History 2001 / San Francisco Demons Nickname Demons – The San Francisco Demons of the XFL have a long and storied history that dates back to 2001. The team was founded by Vince McMahon, who owns World Wrestling Entertainment (WWE). While many …