Downvoting you for tge AI comment. AI steals from what's already been written and puts it together to fit the prompts it's given. AI doesn't create anything. Trek fanfic has been written by fans since the show originally aired. There's undoubtedly millions of fics that have been written about the mirror universe at this point, along with crossovers between Star Trek and Star Wars.

He didn't miss the final season, per the article, he was in 16 of 24 episodes, and he left to go be in a play outside of Chicago. Staying on the show would have been a better career choice.

Chekov was a ing character, nothing more. The show was about the trinity of Kirk, Spock, and McCoy. Koenig needs to stop whining and accept that, and accept that the only roles he's gotten since 1969 are due to his role on Star Trek. If he had more talent, he'd have had plenty of other TV and movie roles. He should be happy that millions of Trek fans love him and that he's a part of a show that spawned so many other TV series, movies, books, etc.

Stop being so bitter that you weren't the star of the show, Walter.