Mirror Universe
(coexisting on another dimensional plane)

The following is a list of unnamed ISS Enterprise personnel

Bridge crew

These three crewman performed daily operations on the bridge of the Enterprise, including duties at the engineering station. (TOS: "Mirror, Mirror")

All were played by unknown actors.
The African-American engineer previously appeared as a Cadet on Argelius II in "Wolf in the Fold", and would later appear as a Thrall in "The Gamesters of Triskelion".

Bridge guards

These two guards, along with Roger Lemli, stood guard on bridge of the Enterprise.

The second guard stood watch with both the first guard and Lemli. He was especially leering at Uhura during her confrontation with Sulu. (TOS: "Mirror, Mirror")

Both were played by unknown actors. The actor playing the second guard also appeared as an Enterprise security officer in several episodes.

Chekov's guards

Chekov's guards attempted to kill Captain Kirk on Chekov's orders in the mirror universe, in order that the entire crew would advance in rank. They were both killed by Wilson, Chekov's third guard, who took sides with Kirk for an opportunity at a better promotion. (TOS: "Mirror, Mirror")

Two of the guards were played by Bobby Bass (#1) and Bobby Clark (#2).

Corridor guards

Several crewman were on duty patrolling, standing guard, or simply passing through in the corridors of the Enterprise between the transporter room and sickbay. Each would salute Captain James T. Kirk as he, Scott, Uhura and Doctor McCoy passed by. (TOS: "Mirror, Mirror")

All were played by unknown actors. The Star Trek Customizable Card Game gives Guard #1's name as Ensign Gaffney.

Engineering guard

Engineer guard

This crewman stood guard outside of the emergency manual monitor. He was incapacitated by Doctor Leonard McCoy's hypo, so that he and Montgomery Scott could enter the emergency manual monitor to manipulate the Enterprise's systems. According to McCoy, the dosage he gave the guard would have him put out for six hours. (TOS: "Mirror, Mirror")

Played by an unknown actor who also appeared as his prime universe counterpart in several episodes.
The Star Trek Customizable Card Game gives his name as Ensign Davis.

Injured man

This man was a patient in sickbay. To his horror, Leonard McCoy found his two assistants betting on the man's tolerance for pain. (TOS: "Mirror, Mirror")

This man was only mentioned in dialogue.

Kirk's guards

Led by Farrell, Kirk's guards came to his rescue, however were already beat to the scene by the traitorous Wilson during Pavel Chekov assassination attempt. They later oversaw Chekov's punishment in the agony booth.

Another of Kirk's guards stood guard outside of his quarters. (TOS: "Mirror, Mirror")

Both were played by unknown actors.

McCoy's assistants

These two medical assistants worked in sickbay.

Dr. Leonard McCoy was appalled by what he found in the ship's sickbay, describing it a "Chamber of Horrors", further noting that he found his assistants "were betting on the tolerance of an injured man," specifically, "how long it would take him to pass out from the pain." (TOS: "Mirror, Mirror")

These medical assistants were only mentioned in dialogue.

Phaser control guard

Phaser control guard

This crewman guarded the phaser control room. He confronted Montgomery Scott for not having authorization when Scott attempted to enter the room to disable the Enterprise's phasers. When the guard suggested contacting security chief Hikaru Sulu, Scott backed down to avoid a confrontation. (TOS: "Mirror, Mirror")

Played by Paul Prokop. Even though he had dialogue, he remained uncredited.

Spock's guard

Spock's Vulcan guard

This Vulcan guard escorted Spock as he, James T. Kirk and Farrell walked the corridor. Spock later warned Hikaru Sulu that if he were to be assassinated that Sulu remember that Spock's operatives would avenge his death and that some of them were Vulcans. (TOS: "Mirror, Mirror")

Played by Russ Peek.

Sulu's guards

Sulu's guards attempted to kill Captain Kirk and Spock so that Sulu could become captain.

This attempt was thwarted when Marlena Moreau used the Tantalus field against the guards, vaporizing them, allowing the four members of the USS Enterprise to return to their universe. (TOS: "Mirror, Mirror")

Transporter room guards

These two crewman stood guard in the transporter room. One held Kyle so that Spock could take and use Kyle's agonizer on him for not correcting for a transporter error.

The second guard was later on the bridge when Uhura engaged Sulu. Uhuru had him take over at her communications station after the altercation so that she could go to the sickbay. (TOS: "Mirror, Mirror")

Both were played by unknown actors.
The first one also portrayed the prime universe counterpart of his character in "This Side of Paradise".
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