the main computer. Initially, Filmation was only going to use the voices of William Shatner, Leonard Nimoy, DeForest Kelley, Doohan and Barrett. Doohan and Barrett would also perform the voices of Sulu and Uhura. Nimoy refused to voice Spock in the series unless Nichelle Nichols and George Takei were added to the cast, claiming that Sulu and Uhura 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. According to Scheimer, when Nimoy pointed out that the casting would cut the only two minority actors from the series, "We were horrified at our unintended slight, made all the worse because we were the one studio who had been championing diversity in its output." Koenig was not forgotten, as Filmation were able to assuage Nimoy's complaints on his account by buying a script from Koenig for one episode ("The Infinite Vulcan"). Voice recording began in June 1973, with the first three episodes recorded as an ensemble, i.e. all the voice actors for the episode in the room at the same time. Later episodes used the more typical model of recording the voice actors separately to work around their other commitments. William Shatner and Leonard Nimoy, who were both touring in plays at the time, recorded their lines in whatever city they happened to be performing in and had the tapes shipped to the studio. Doohan and Barrett, besides providing the voices of their Original Series characters and newcomers Arex and M'Ress, performed virtually all of the "guest star" characters in the series, with exceptions such as Sarek, Cyrano Jones and Harry Mudd, who were performed by the original actors from The Original Series. Other guest voice actors included Ed Bishop, who voiced the Megan Prosecutor in "The Magicks of Megas-tu", and Ted Knight, who voiced Carter Winston in "The Survivor". Nichelle Nichols performed character voices in addition to Uhura in several episodes, including "The Time Trap" and "The Lorelei Signal". Animation and design Similar to most animated series of the era, the 22 episodes of TAS were spread out over two brief seasons, with copious reruns of each episode. The director of the first season (16 episodes) was Hal Sutherland and Bill Reed directed the six