If you are going to be a bad-ass, monster murdering, super hero it will be very important to know the anatomy of the beasts you will be fighting. This will give you insight and an advantage in destroying said villains. Here is a rudimentary guide to get you started. You are welcome.
Anatomy of Monsters
The Mogwai (these things aren't technically monsters, but they are creepy and it is always good to know how to kill creepers.)