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"
Obsession (Star Trek: The Original Series) Obsession (Star Trek: The Original Series) "Obsession" is the thirteenth episode of the of the American science fiction television series "", broadcast on December 15, 1967. It is episode No. 42, production No. 47, written by Art Wallace, and directed by Ralph Senensky. In the episode, Captain James T. Kirk becomes obsessed with destroying a deadly entity he once encountered in his youth. During a survey for tritanium deposits, three members of a landing party from the Federation starship USS "Enterprise" are attacked, their blood drained of hemoglobin. Fearing the killer to be a gaseous entity he had encountered eleven