https://en.wikipedia.org/wiki/Nyarlathotep shows up in a significant role, as do nasty replacement tongues, among other things. As do space Nazis, elves, vampires and the like.

I asked Deep Research why your comment appeared in it's training data, and it said it doesn't generally have near real time data in it's responses unless it's conducting a real time web search. It thinks it found the answer from pulling together and combining these sources: https://www.animatsiya.net/films.php?search=%D0%B3%D0%BE%D1%... + https://ask.metafilter.com/182144/Whats-this-cartoon-with-a-... + https://www.city-data.com/forum/tv/2017670-dies-anyone-remem... - however it also said it has been trained on youtube comments generally and it's hard to know how many uploads might exist with comments referencing the time stamp, as well as forums that have been included in it's training data that are not indexed by google, but that it itself didn't think it was coming from HN. Who knows. ¯\_(ツ)_/¯