Just a quick thread: 1. Alucans. Travel to earth by spaceship and land via a small shuttle. Secretive as physically frail but can fire small missiles. Also poison water supplies and can kill if they get their teeth into you. Plan to take over the world and destroy all humans. 2. Werecans. Take body and soul of victims. Can be injured with a well aimed catapult but silver ball shot needed to destroy them and release their victims. 3. Francansteins monsters An occupational hazard of making soda can camping stoves. Incorrect ignition makes them come to life when they try to kill all the creators relatives until full of remorse they sail away to the polar circles. 4. Zombie cans. Dead cans come back to life and slowly roll about windswept streets until they bump into somebody and try to eat them. 5. Soda cans. Minions of international cartels seeking to take over the world. They pump addictive substances into humans: caffeine sugar alcohol various stimulants and lifestyle fantasies. Must be killed before Armageddon. 6. Can Eaters. Defenders of the realm armed only with slingshots covertly saving the world from a dark winter. I really must see my doctor.