Bates
Bates was a male Human Starfleet officer who lived during the mid-23rd century. He served in the command division aboard the  under Captain James T. Kirk, during a historic five-year mission that starship undertook.

In an alternate 2269, and at the request of Enterprise first officer Thelin, Bates researched Starfleet records for information on Spock, after he had apparently been prematurely removed from the "prime" timeline. Bates reported that there was no Vulcan named Spock serving with the Starfleet in any capacity. He then displayed and narrated the family history of Sarek, noting his accomplishments as a diplomat, his separation from and the subsequent deaths of his wife Amanda and their son Spock. () Appendices 
 Backgound information 
Bates was one of many TAS characters voiced by James Doohan.

As evidenced by the first draft script of "Yesteryear", Bates was originally not in the episode; his involvement in the outing was instead initially written for Ensign Chekov, though Bates was created to replace his part in the story. 

Whereas the pre-established character of Chekov wasn't described in the first draft script, Bates was described as "a young officer, but efficient" in the final draft. He was also, like Chekov had been, written into the script as having the rank of ensign, though this detail did not make the transition to the screen. 

Nonetheless, the novelization of "Yesteryear" (in Star Trek Log 1) additionally gives Bates' rank as ensign.

 Apocrypha 
The novel The Fire and the Rose'' switches the names of Erickson and Bates, so that "Paul Bates" accompanies Kirk and Spock through the Guardian, while "Erikson" stays on the ship and researches Spock's history. This switch happened because both characters' names are not mentioned in dialogue, so the author was unable to determine which was which and ended up making the wrong guess.

External link 
 

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Humans
Starfleet command personnel
USS Enterprise (NCC-1701) personnel