Reacting to SCP fanfiction is complex. There are those fanfictions that manage to build on the SCP foundation in a positive way. They might introduce new relationships between SCP entities or new backstories that are engaging. But then there are the ones that are just not suitable for a general audience. They might contain excessive violence or disturbing themes. It really depends on the individual piece, and you have to be careful when exploring the world of SCP fanfiction.
Well, it depends on the character. A tough, battle - hardened character might be more intrigued than scared. They could see the SCP fanfiction as a new kind of threat or mystery to analyze. However, they might also be disgusted by some of the extreme and unethical elements within the SCP stories. Like a detective character, they would try to make sense of it all but might be put off by the overall dark nature.
The good SCP fanfiction can be really engaging. It can expand the SCP world in ways that make you think. For example, I read one that explored the moral implications of containing certain SCPs in a more in - depth way. It was thought - provoking. However, the bad ones are often just poorly written, with plot holes and inconsistent characters. And the ugly? Well, that's the ones that go for the shock factor with no real substance, like just throwing in random grotesque scenes for no reason.
Some people react with a sense of exploration. They view SCP fanfiction as a new world to discover. They start to dig deeper into the lore, trying to understand the relationships between different SCPs and the overarching themes. They might look for hidden meanings or Easter eggs within the fanfictions.