Page "Star Trek: The Animated Series" Paragraph 10

As is usual for animation, the voice actors did not perform together but recorded their parts separately to avoid clashing with other commitments.

For instance, William Shatner, who was touring in a play at the time, would record his lines in whatever city he happened to be in and have 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, except for a few notable exceptions such as Sarek, Cyrano Jones and Harcourt Fenton Mudd, who were performed by their original actors from The Original Series.

Occasional other guest voice actors were also used, such as Ed Bishop ( Commander Straker on UFO ) who voiced the Megan Prosecutor in " The Magicks of Megas-tu ", and Ted Knight who voiced Carter Winston in " The Survivor ".

Nichelle Nichols also performed other character voices in addition to Uhura in several episodes, including " The Time Trap " and " The Lorelei Signal ".