Here is a video featuring Marty Kove (Sensei Kreese) returning to his old dojo, 30 years later (the last appearance being in The Karate Kid: Part III).
Beyond the Backlot tells us:
Calling all The Karate Kid and Cobra Kai fans! With Cobra Kai’s popularity on Netflix, we wanted to share our uncut, exclusive interview with actor Martin Kove aka John Kreese, the franchise’s infamous villain, with fellow franchise fans. Mr. Kove guides us through the original Cobra Kai dojo location — his first time in 30+ years! — located in North Hollywood, CA. He shares special stories and comments about the movies, television show, and his career. This is a interview you DO NOT want to miss.
Interesting that Kove reveals that his role in the third movie was set to be much bigger, but scheduling conflicts prevented that. Nice tidbits in there, such as Kove revealing that Sylvester Stallone gets threatened with real fights from the mentally challenged who can’t separate Rocky Balboa from the actor.