The Monster, etc.

from The_Keep

http://www.mckellen.com/cinema/keep/index.htm

http://en.wikipedia.org/wiki/Mythology_of_Lost#The_Monster
Any Entity that's from this or other dimensions & times.
http://lostpedia.wikia.com/wiki/The_Monster,
http://lost.wikia.com/wiki/The_Monster

http://parabook.wordpress.com/2009/12/29/goat-man-creature-confirmed-as-real/

The Monster that's kept in The Keep starts out as a smokey mist that eventually turns into a monstrous human form.

On Lost, the Smoke Monster can shape into a more human looking form.
http://therabbitportal.blogspot.ca/2009/12/the-smoke-monster-on-lost.html

http://www.dreadcentral.com/news/59928/check-out-nearly-15-minutes-deleted-prometheus-footage-while-you-still-can

https://therabbitportal.blogspot.com/search?q=paranormal

http://paranormal-intersection.blogspot.ca/2012/10/monsters.html