USS Defiant (NCC-1764) personnel
The following Starfleet personnel served aboard the  in 2268:

Unnamed crew on bridge

Captain 

The captain was a 23rd century Human Starfleet officer of the Defiant. 

In 2268, he had his neck broken by an operations division crewman on the bridge, in front of his command chair. He was discovered there by the landing party from the , where Dr. McCoy announced the injury he had suffered. () 

He was again discovered in the mirror universe by the landing party from the  in 2155, where it was again indicated by  that captain's neck was broken. He and his assaulter's corpses were later dragged aside by ,  and , so as to access the Defiants helm. ()

Archer later took over the captain's quarters as his own, and found and changed into one of his uniforms from the captain's wardrobe. ()

Operations ensign 

This ensign served in the operations division aboard the Defiant. 

In 2268, he broke his captain's neck, but also succumbed due to sabotaged environmental conditions on the bridge, in front of the command chair. He was discovered there by the landing party from the , where it was indicated that he broke the captain's neck. () 

He was again discovered in the mirror universe by the landing party from the  in 2155, where it was again indicated that he broke the Captain's neck. His and the Captain's corpses were later dragged aside by Archer, Tucker and Mayweather, so as to access the Defiants helm. ()

Unnamed crew in engineering

Command crewman 1 

This command division crewman died in the main engineering and was seen there by Ensign Pavel Chekov. ()

Operations engineers 
These engineers and technicians were found dead, by Ensign Pavel Chekov, in emergency manual monitor and main engineering, proper. ()

Sciences crew woman in engineering 

This sciences division crew woman died in main engineering, where she was apparently strangled by the insane engineer lying next to her. She was seen by Ensign Chekov there. ()

Sciences crewman in engineering 

This sciences division crewman died in the main engineering, and was seen there by Ensign Pavel Chekov. ()

Unnamed crew in sickbay

Medical surgeon 
The medical surgeon was responsible for investigating what was happening to the Defiants crew.

When the ship was boarded by the landing party from the Enterprise, Dr. McCoy accessed the ship's log. Based on McCoy's observations, the crew "killed each other," and that for as far as he could tell "even the medical surgeon down here didn't really know what was going on." ()

Medical technician 1 

This medical technician, affected by the insanity caused by the spatial interspace, strangled an operations division crewman in sickbay. He lied next to his victim, found dead by Doctor McCoy. ()

Medical technician 2 

This medical technician died in the sickbay of the Defiant. When the ship was caught in the interspatial rift, his body began to disintegrate. When Doctor Leonard McCoy touched him, his hand passed through his back. ()

Operations crewmen in sickbay 
These crewmen were confined to biobeds in sickbay, where they later died, only to be discovered there by Doctor Leonard McCoy. One was strangled by a medical technician. ()

Sciences crew women in sickbay 
These sciences division crew women died in sickbay, where they were discovered by Doctor McCoy, who came to the conclusion that they had all killed each other. ()

Sciences crewmen in sickbay 
These sciences division crewmen died in sickbay, where they were discovered by Doctor McCoy, who came to the conclusion that they all killed each other. One was confined to a biobed. ()

Unnamed crew in corridors

Command lieutenant 

A blonde lieutenant in the command division was found dead on deck 9, near section 4A.

After the Defiant was pulled back and into the mirror universe, Commander  and a MACO stepped over her body while trying to find Slar, a Gorn hiding nearby. ()
{{bginfo|The lieutenant was played by Nicole Malgarini. }}

 Command crewman 2 

This crewman experienced hallucinations, and insanity due to spatial interphase which caused him and the rest of the crew to kill each other. ()
 

Operations lieutenant 

This lieutenant served in the operations division as an engineer aboard the Defiant.

He was killed in 2268 by phaser fire below decks, and his body, along with a discarded phaser pistol, was the first discovered by  and  after they beamed aboard Defiant, after the ship had been transferred to the mirror universe. ()

Operations crewman 1 

A dead Human crewman aboard the USS Defiant. ()

Operations crewman 2  

This crewman was one of many who perished on deck 9, near where Jonathan Archer discovered the stowaway Gorn, Slar. ()

Sciences lieutenants  
These lieutenant began to have hallucinations, shortly after entering a region of spatial interphase space, and eventually madness. They were killed when the crew turned on each other. ()

Captured in mirror universe

After the death of the crew, the Defiant traveled through an interphasic rift to the year 2155 of the mirror universe, where it was captured by the Tholians who used slaves to salvage it. It was subsequently commandeered by the  of that universe and his crew, who consisted of the following:

Commander / Captain 
Commander 

Sgt. 
Lieutenant / Empress 
Major 

Apocrypha
According to a  issue of DC's TOS volume 1 series (#56), Tonia Barrows eventually earned a promotion to lieutenant, and served aboard Defiant'', although she was injured and left the vessel before it met its fate.

External link 
 

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Defiant (NCC-1764) personnel
Defiant (NCC-1764) personnel