Terry Silver was Cobra Kai's most significant villain for a while, but his reign of terror came to an end in season 5. So ...
Terry Silver was back to ruin the lives of Daniel ... and to be betrayed by that figure, that partnership, that friendship. I think the combination of a betrayal by someone so close to you ...
At the end of Cobra Kai Season 6 Part 1, it looked like there was just one major antagonist left for our heroes to deal with ...