3 and 4. Quite possible. Deep ocean floor. We know more about the surface of the moon than we do about the floor of the ocean. Hell, there is a lake on the bottom of the sea. Its so super dense that it sinks in water and has formed a lake like living quarters for clams. Big Foot, again, big world, little explored. Vampires: Some people join a cult for this kinda cool. Disease that also gives you a vampire look.UFO, We can't be the only life forms in the universe. Most people are happy with bacteria as Extra-TerrestrialsWerewolves. Again, we don't know much about this world or other worlds for that matter, so its possible that some other planet has something like this.O and zombies are real. But its spelled Zombi. You use special types of poisons to put someone under a trance to make them do tasks over and over again. People coming out of their graves was common in the 1800's. People would be declared dead if they didn't wake up when the doctor screamed "WAKE UP" over and over again. To get rid of a cold, they drained blood. Heroin was a cough syrup for children. So, it wasn't uncommon for medical mistakes to be seen as zombies or terrible creatures