I think you are thinking of the movie Wrong Turn
The Pit (1981)
A lot of the creatures in the movie The Cabin in the Woods were made to resemble existing horror movie monsters/killers. The people wearing the white masks were most likely created in homage of the movie The Strangers. And possibly a mix of a few other films killers as well.
tarzan
Wildwood, the woods, the movie theaters
The movie is called, "The Hunger Games".
Woozles .
Abominable
Many types of wolves, worms, slugs, snails, frogs, and other types of amphibeans live in the woods.
The Blair Witch project
Defiance
Magical creatures don't exist in real life. In fantasy novels - well, that would depend on which fantasy book you are talking about.
His favorite movie is 300.