I highly dislike, and like the ending. For one thing they terminate him which makes absolutely zero sense from an in-universe perspective, but then again it's a nice little meta twist that I didn't see coming. Ultimately the idea is pretty good, the only thing I disagree with is the fact that he has to touch the books to enter into their story, making it unexplained how he enters each story will make it seem more intriguing. The tonality of the article is a major problem that ruins a lot of it for me, here's what I'd change about the first sentence:
Description: SCP-XXXX is a black male human who, outwardly, has no anomalous properties.
To this…
Description: SCP-XXXX is a physically normal humanoid male of African-American descent.
For one thing I removed the mention of the fact that he has no outwardly anomalous properties, because it is immediately made redundant in the very next sentence. Not only that, but the sentence was a lot more clinical and less politically incorrect (i.e. I wouldn't say that Iris is a white girl, I'd say Caucasian female).