Paragon City is a fictitious city located in Rhode Island in the United States. The city itself is divided into several smaller neighborhoods that have varying villains and progressively higher levels of villains within them. The arbitrary divisions between zones are explained by the presence of "War Walls," powerful forcefields derived from alien technology, which are used to defend various areas of the city. Included within Paragon City are two zones which are also referred to as cities: Galaxy City, a relatively low level zone; and Skyway City, which is much higher in difficulty and thus requires the heroes to be at a greater power level to be able to safely patrol it. Heroes set out by dealing with low-powered street gangs such as Hellions and Skulls in the initial zones, working their way up to fighting increasingly dangerous threats¡ªsuch as organised crime, corrupt corporations, hostile aliens and supernatural terrors¡ªeven eventually entering other dimensions to fight ultimately powered villains.