Star Trek: The Animated Series were added to the cast—claiming that Sulu and Uhura were of importance as they were proof of the ethnic diversity of the 23rd century and should not be recast. Nimoy also took this stand as a matter of principle, as he knew of the financial troubles many of his "Star Trek" co-stars were facing after cancellation of the series. Koenig was not forgotten, and later wrote an episode for the series, becoming the first "Star Trek" actor to write a "Star Trek" story. Koenig wrote "The Infinite Vulcan", which had plot elements from the original "Star Trek" episode "Space Seed"
Star Trek: The Original Series when writing a weekly series. Asimov corrected himself with a follow-up essay to "TV Guide" claiming despite its inaccuracies, that "Star Trek" was a fresh and intellectually challenging science fiction television show. The two remained friends to the point where Asimov even served as an adviser on a number of "Star Trek" projects. Star Trek: The Original Series Star Trek is an American science fiction television series created by Gene Roddenberry that follows the adventures of the starship and its crew. It later acquired the retronym of Star Trek: The Original Series (TOS) to distinguish the show within the media