In the TNG episode The Enemy, Worf ends up being the only viable donor available to save the life of an injured Romulan.

Crusher: "Worf, you are the only one who can save his life."
Worf: "Then he will die."

Surely a Vulcan would be a superior match for obtaining vital bodily fluids. And with a crew compliment of 1,014 members there wasn't a single Vulcan serving on the Enterprise-D?

Worf: "There is a substance within my cells which you need to survive."
Patahk: "Then you've come to hear me beg for my life?"
Worf: "No."
Patahk: "I would rather die than pollute my body with Klingon filth!"

  • 1
    Are you asking if one ever served on Enterprise D, or if one was serving only during that episode? For example, Taurick was seen serving on the Enterprise quite a while after that.
    – Xantec
    Dec 5, 2012 at 16:35
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    Does the Federation have a School for the Melodramatic Arts at Starfleet Academy?
    – John O
    Dec 5, 2012 at 16:48
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    The most likely explanation is that the Romulan had a Klingon as an ancestor, making him incompatible with Vulcan blood, but compatible with Klingon.
    – Xantec
    Dec 5, 2012 at 18:01
  • 4
    Or that all available Vulcans were of incompatible antigen (or equivalent) types.
    – Compro01
    Dec 5, 2012 at 18:13
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    ...During the episode in question, I have a vague memory of Crusher actually saying to Worf that Lt. Selar isn't a match...
    – Izkata
    Dec 6, 2012 at 1:31

5 Answers 5


There were Vulcans on board during that episode, and they weren't compatible donors:

CRUSHER: My patient is not responding to treatment.

PICARD: You haven't found a compatible ribosome donor?

CRUSHER: The lab is still processing the tests. Early results indicate humans have far too many bio-rejection factors. I've also ruled out the Vulcans we've tested.

The only direct explanation given for how Worf could be more compatible than the Vulcans is some vagueness about how "many humanoids have comparable cell structures."


Lt. Selar, a Vulcan M.D., served onboard Enterprise. She was first seen in the episode "The Schizoid Man." She appears on the right in the image below.

Kareen Brianon, Worf, and Selar

  • "The Schizoid Man" TNG, Episode 2x06, Production number: 40272-131, First aired: 23 January 1989 Dec 6, 2012 at 5:17
  • 1
    Perhaps interestingly, the same actress would later play Worf's half-Klingon girlfriend. Oct 16, 2016 at 13:08

Yes, there were vulcans that served on Enterprise. However, only one example comes to mind presently.

Taurik served on board the Enterprise during the episode Lower Decks, although this took place several years after the incident at Galorndon Core.

  • 6
    There was also Lt. Selar, who appeared in the second season and was mentioned sporadically through the rest of the series.
    – jwodder
    Dec 5, 2012 at 19:39
  • There's also a vulcan male in scant pattern uniform seen in the background of a shot during season 1. In Engineering yellow.
    – aramis
    Dec 7, 2012 at 6:42

Simplest answer:

Even with a one thousand plus member crew, there is a distinct possibility there are NO other Vulcans onboard the Enterprise, AT THE TIME. Given the Vulcans relatively insular nature, it is not difficult to believe there may not be one onboard the Enterprise all the time, despite its flagship status.

  • Like any other military or paramilitary force, the Federation moves its crewmembers from detachment to detachment on a regular basis.

  • This improves the skills of the crewmembers and ensures a variety of skills being available and disseminated effectively.

  • It also ensures cultural interactions, hopefully improving relationships between different social, cultural or species groups.

  • The Vulcan who is capable of being a member of Starfleet is often just as desired by the Vulcan High Command, who will invoke Vulcan interests when their young adults consider Starfleet as a possible occupational choice.

Production Notes

Checking the production notes for these episodes we discover there was a Vulcan medical officer named Lt. Selar who was around during the second season of TNG, appearing in "The Schizoid Man." By the third season when "The Enemy" is filmed, she is either no longer a crew member or on assignment somewhere else and unavailable.

  • Selar was portrayed by Suzie Plakson and was only actually seen in TNG: "The Schizoid Man", although she was referenced many times throughout the series.

  • "The Schizoid Man" TNG, Episode 2x06, Production number: 40272-131, First aired: 23 January 1989

  • "The Enemy" TNG, Episode 3x07, Production number: 40273-155, First aired: 6 November 1989


There was a Vulcan viola player in "Ensigns of Command", but it is unknown if he is Starfleet or civilian

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