Lab 257 is claimed to have elements of truth, but it's not a straightforward account. There are varying opinions on how accurate it is. Some say it's mostly true, while others think it has some exaggerations.
I don't know for sure. You'd have to look into the background and sources of the story to determine its authenticity. Sometimes, such stories are a blend of truth and imagination.
No, Stranger Things Lab is not based on a true story. It's a fictional creation that combines elements of science fiction and horror to create an engaging narrative.
If it's related to the 'Hawkins Lab' in 'Stranger Things', then no. It's a fictional story created for the show. The Upside Down and the special powers are all made - up concepts for entertainment purposes.
Well, if Undertale could watch Undertale fanfiction, it could lead to some chaos. For example, Sans might make jokes about the wild scenarios in the fanfics. Papyrus, on the other hand, might be eager to correct any misinformation about himself. And Flowey could use it as a way to manipulate things further, seeing how the fans view the characters and using that knowledge to his advantage in this strange, meta - situation.
Some characters might be amused. For example, Sans would probably make some witty remarks about the fanfiction's plot twists. Papyrus, on the other hand, might be a bit confused at first but then get really excited if he finds a heroic role for himself in the fanfiction.