D&D General Favorite Creepy Monster To Run?

[jdrakeh]

Doppelganger. With a little (secret) player cooperation and a closed environment, a lot of fun can be had with a doppelganger.

 

[Mannahnin]

On this topic, I always want to use the scarecrow in a Halloween themed adventure, but the MM version is just so wimpy. I need to get off my arse and homebrew something better.

I had a witch villain in one of my campaigns who used construct scarecrows as guards and enforcers. I think I came up with my own stats. Not especially horrifying, but the PCs didn't love the extra flame damage they took being slammed by them once the (vulnerable) scarecrows were set alight.

 

[Mannahnin]

Doppelganger. With a little (secret) player cooperation and a closed environment, a lot of fun can be had with a doppelganger.

One of the scariest antagonists I remember from a 3.5 campaign we played was an assassin who possessed people a la Magic Jar. Giant pain to fight, especially once he started possessing us.

 

[TiQuinn]

Carrionettes. Creepy little marionettes that try to take over your body. I had so much fun running an adventure with those things!