Blizzeta itself wasn't very scary but when yeta turned around and said "NOT TAKE MIRROR" That was really creepy at I was playing that part in the dark to add to it, not sure fi that really counts though.
and the Twilit Bloat was justy nasty and scary in a way too.
Puppet Zelda was creepy, I find the whole idea of possessing people really scary. Also, the water guy, I think his name is morpheel, his battle kind of creeped me out because I really hate water, and dark places. I don't know which battle is worse.
Armoghoma and Morpheel...both spiders and being underwater with something that could kill you scare me. The spider fear is pretty much explanatory and it's really common, but being underwater with something that could kill you...nightmares.
To quote Fledge : "I wish I was brave like you, Link."