Thanks for the response.
I agree that the atmosphere is the most important aspect of a horror game. I am also not a amateur in these kinds of things, because I made a couple of prototypes (even one in UDK). But without a character, which has some certain features/functionalities, there is no progression or scare factor in it. The atmosphere can be great, but there is always a force, which needs to put a character in danger or atleast hurt him. If it wouldn’t be the case, the player has nothing to be afraid of.
I don’t want to create a character with similar features to existing ones, but I want to know on an individual basis, what scares people. I want to implement functionalities, which will scare/gross out the player. The character will have multiple functionalities, which will make the creature itself scary in a wider range, because it can change it’s appearence/behaviour. But in order to create the functionalities, I need to know, what people consider scary on a character level.