>>19 Franken Fran was awesome.
>>29 Gyo scared the shit out of me! I already hate the ocean but damn.
>>30 Uzumaki was some freaky shit but I did enjoy reading it.
Personally I would say though that the freakiest thing I have ever read was
Parasyte. I had to quite while I still kept my sanity that was just so scary! The art style is just too graphic and everything is just...ugh.
https://www.google.com/search?q=parasyte&ie=utf-8&oe=utf-8&aq=t&rls=org.mozilla:en-US:official&client=firefox-a