Board Thread:Off Topic/@comment-37824639-20190407170034/@comment-10502460-20190408004528

I found this page giving a history of the character:

https://villains.fandom.com/wiki/Jeff_the_Killer#Publication_History

Apparently Go To Sleep came before the actual Jeff the Killer story that most are familiar with and which KBK adapted for his rewrite in 2015.