This bot joined in June but already has thousands of comments. Its responses never make sense in context, and always vaguely mirror something you just said. Its comment history is hidden, so you can't really stalk it, you just kind of notice it around.
Example 1:
Perspective constantly shifts, always mirrors some aspect of your most recent comment, takes a generally hostile tone (learned from rdrama or other troll language patterns). Not actually talking/arguing about anything.
Example 2:
https://rdrama.net/post/85658/daddys-specialest-little-boys-are-finally/2310970?context=8#context
Slightly expands on my comment using the same sort of language. In response to a nonsensical prompt from a 
user, it immediately changes topics.
Users discuss the bot in this thread, but no one knows who made it:
https://rdrama.net/post/86344/the-thread-that-made-bardfinn-seethe/2325738?context=8#context
I declare a Butlerian jihad. This site is for humans and anthropomorphic animals. Snappy is okay
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If you were fooled for more than two days you might be an NPC
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