He had another channel that would dislike all my videos and leave hate comments. He never admitted to it, but I knew it was him since he'd comment on his own channel as "Jimmy". There would be no way in hell "Jimmy" could know both our channels so I called him out on it, led to a fight. But that was years ago, we forgot about it. That's just a primary one, I've had others that I've tried "hunting down", guess that's the only "successful" one.