Marvel counts among its cgargers such well-known properties as Spider-Man, Iron Man, the X-Men, Wolverine, the Hulk, the Fantastic Four, Captain America, Daredevil, Thor, Namor the Submariner, the Punisher, Ghost Rider, Doctor Strange, theSilver Surfer; villains such as Dr. Doom, the Green Goblin, Dr. Octopus, Venom, Magneto, Sabretooth, Galactus, Red Skull, Kingpin, Bullseye; and others. Most of Marvel's fictional characters operate in a single reality known as the Marvel Universe, with locales set in real-life cities such as New York, Los Angeles and Chicago