Hybrids are fairly common in Star Trek: Spock is half Vulcan, Deanna Troi is half Betazoid, B’Elanna Torres is half Klingon and, just for good measure, Simon Tarses is ¼ Romulan.

However, in all of these cases that I can think of, the other half is always human.

Are there any non-human hybrid characters? Especially ones that are recurring or at least the focus of an episode?

If not, is there an out-of-universe explanation for their absence/rarity/scarcity? From a fandom point of view, I can’t imagine a half-Klingon half-Vulcan might not make for an interesting story, for example.

  • 1
    Do Xindi count?
    – Mazura
    Commented Jun 6, 2016 at 23:20
  • 1
    An in-universe answer to the related question, "Why are there more human/alien hybrids than alien/alien?" could be that humans are so much more diverse than other species, so finding a compatible human (culturally/emotionally/intellectually) would be easier than most other races that are depicted in the show as being very monolithic, and in fact when alien races do diversify they often diversify so strongly that they split - such as the vulcans and romulans. The humans appear to be one of very few races with such diversity and no splits.
    – Adam Davis
    Commented Jun 7, 2016 at 15:19
  • 6
    @AdamDavis Did you just write that "humans are the sluts of the galaxy" in the nicest and most academic way possible? Commented Jun 7, 2016 at 16:42
  • 3
    @ToddWilcox I can neither confirm nor deny the allegations presented.
    – Adam Davis
    Commented Jun 7, 2016 at 17:18
  • @Todd - Have you seen the show?
    – Mazura
    Commented Jun 8, 2016 at 12:12

2 Answers 2


Per Memory Alpha's article on "Hybrids"

  • Betazoid / Tavnian (Lwaxana Troi's and Jeyal's child) (DS9: "The Muse")
  • Cardassian / Bajoran (Mika and Dukat's child, and Tora Ziyal) (DS9: "Covenant")
  • Cardassian / Kazon (Seska and Culluh's child) (VOY: "Basics, Part I", "Basics, Part II")
  • Romulan / Klingon (Ba'el and several other prisoners in the Carraya IV colony) (TNG: "Birthright, Part I")
  • Romulan / Vulcan (Saavik)
  • Talaxian / Mylean (Neelix's great-grandfather was Mylean) (VOY: "Scientific Method")
  • Talaxian / Mylean / Vulcan (Tuvix, was caused by a transporter malfunction with hybridizing flowers) (VOY: "Tuvix")
  • Trill / Klaestron (Benjamin Sisko briefly assumed that Ilon Tandro was the son of Curzon Dax and Enina Tandro) (DS9: "Dax")

As to the scarcity of non-human hybrids, the simple fact is that the overwhelming majority of characters (especially those in committed long-term relationships where having children is likely) are human or part-human.

On top of that, many of the aliens that we see (Klingons, Romulans, Vulcans, Cardassians) view cross-species relationships, especially those that result in offspring as deeply unpleasant. While that's a fun well to dip for adult characters, watching children suffer isn't something that audiences want to do.

  • 8
    Although I guess that opens a whole new can of worms. On 21st century Earth what defines a species is whether members can interbreed. According to our current understanding of biology, all the main races are the same species.
    – Shane
    Commented Jun 7, 2016 at 15:14
  • 4
    @Shane - I'm not touching that one with a bargepole after all the downvotes I got for daring to suggest that Hermione Granger had a 'race'.
    – Valorum
    Commented Jun 7, 2016 at 15:29
  • 2
    @MrLister Romulans are the descendants of Vulcans who rejected logic and left Vulcan.
    – chepner
    Commented Jun 7, 2016 at 18:15
  • 2
    @Shane It's a trifle more complicated than just what can interbreed. For example, you can cross lions and tigers, but nobody suggests that the two are the same species because the offspring of such a pairing is significantly different from either parent.
    – Perkins
    Commented Jun 7, 2016 at 19:19
  • 2
    @Perkins Nobody suggests they are the same species because the offspring cannot reproduce itself. It has nothing to do with looks.
    – user15742
    Commented Jun 7, 2016 at 19:38


You can find a full list here.


  • Tora Ziyal is a Bajoran-Cardassian hybrid.
  • In the DS9 episode The Muse, Lwaxana Troi and her husband Jeyal have a half-Betazoid half-Tavnian child.
  • In the DS9 episode Covenant, Mika and Benyan have a half-Bajoran half-Cardassian baby.


  • In the TNG episode Parallels, Worf and Deanna Troi have children who are half Klingon, one-quarter Betazoid, and only one-quarter human. (OK, there is some human in there, but neither parent was fully human.)

  • In the TNG episode Birthright, Part I, Be'al and several others were Klingon-Romulan hybrids.


  • In the VOY episode Scientific Method, Neelix was a Talaxian-Mylean hybrid.
  • Tuvix was a Talaxian-Mylean-Vulcan hybrid. (He wasn't created through ordinary means though, but by a transporter malfunction.)


  • Saavik was a Vulcan-Romulan hybrid.
  • 1
    Follow-up question: how many of these characters have you seen? ;) Commented Jun 7, 2016 at 0:57
  • 4
    Re Tuvix: I don't think transporter malfunctions count. It sounds as if OP is looking for offspring. But most of the other examples look good.
    – Kevin
    Commented Jun 7, 2016 at 5:10
  • @OftenRight None, sorry. I'm still debating whether or not to continue watching TNG after the first season.
    – Rand al'Thor
    Commented Jun 7, 2016 at 10:47
  • 2
    @Randal'Thor the second season isn't bad, but hang in there till the third season; it really matures a lot by then 😉🖖🏻 Commented Jun 7, 2016 at 10:51
  • 2
    @Randal'Thor Season 3 saw a new head writer, and Roddenberry taking a backseat, and the show's flavor changes. Most fans consider season 3 onwards clearly better than season 1 & 2. You might consider skipping the first two seasons and then revisiting them later if you want more TNG.
    – Ranger
    Commented Jun 7, 2016 at 16:59

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.