Spoiler alert! 'Cobra Kai' stars Tanner Buchanan, Peyton List and Mary Mouser are dishing exclusive secrets from the action-packed prom fight in season 4. Plus, the cast is revealing how they really feel about the results from the All Valley Karate Tournament in the season finale, and why there were a lot of tears on set that day. 'Cobra Kai' is available to stream on Netflix.