There are multiple questions on the site about fantasy or science fiction creatures that aren't directly related to a specific on-topic work. Most are eventually closed as off-topic, but they're often quite contentious

A few examples: 

 - [Why don't zombies eat each other?][1] [Closed]
 - [Aren't zombie outbreaks self defeating?][2] [On Hold]
 - [What Happens to Zombies that Don't Eat?][3] [Closed]
 - [Are Werewolves undead or alive?][4] [Closed]
 - [What is it about the full moon that affects Werewolves?][5] [Closed]
 - [Why are vampires not rotten like other undead?][6] [On Hold]

Do we have a set policy on how to treat these type of questions?


  [1]: http://scifi.stackexchange.com/questions/7028/why-dont-zombies-eat-each-other
  [2]: http://scifi.stackexchange.com/questions/8193/arent-zombie-outbreaks-self-defeating
  [3]: http://scifi.stackexchange.com/questions/8206/what-happens-to-zombies-that-dont-eat
  [4]: http://scifi.stackexchange.com/questions/107844/are-werewolves-undead-or-alive
  [5]: http://scifi.stackexchange.com/questions/9971/what-is-it-about-the-full-moon-that-affects-werewolves
  [6]: http://scifi.stackexchange.com/questions/24137/why-are-vampires-not-rotten-like-other-undead